Flexbeam Red Light Therapy — Full Review

Flexbeam is a portable, battery-powered red light therapy device designed for targeted treatment of specific body areas. In a market dominated by large panels and face masks, Flexbeam occupies a distinctive middle ground: too small for whole-body therapy, too powerful for simple handheld use, and too portable to ignore.

The device was developed by Recharge Health, a Norwegian company founded by Bjorn Ekeberg, and has gained a following among athletes, biohackers, and chronic pain sufferers who want clinical-grade photobiomodulation they can use anywhere. This review examines whether the engineering justifies what is unquestionably a premium price tag.

Design and Build Quality

Physical Construction

Flexbeam is built around a rigid aluminium body containing three LED modules that can be angled independently. The device folds into a roughly book-sized package for transport and opens to wrap partially around curved body surfaces — a knee, shoulder, neck, or wrist.

The build quality is noticeably superior to most consumer red light devices. The aluminium housing feels substantial and well-machined. The hinges between the three modules are firm without being stiff, holding their angle reliably during treatment. The overall construction suggests a product designed by engineers who expect it to be used daily for years, not a device built to a price point.

Dimensions: Approximately 40 x 8 cm (unfolded) Weight: Approximately 400g (including battery)

LED Configuration

Each of the three modules contains an array of LEDs delivering three wavelengths:

• 660 nm (red) — targeting superficial tissue, skin, and surface inflammation
• 810 nm (near-infrared) — the primary therapeutic wavelength for deeper tissue penetration
• 850 nm (near-infrared) — complementing the 810 nm for broad near-infrared coverage

The triple-wavelength approach is one of Flexbeam’s key differentiators. Most competing targeted devices offer two wavelengths (typically 660 nm + 850 nm). The addition of 810 nm fills a gap in the near-infrared spectrum that has strong evidence for musculoskeletal conditions.

Irradiance

Flexbeam reports irradiance of approximately 100 mW/cm2 at the surface of the LEDs. At 2-3 cm from the device (typical treatment distance when wrapped around a body part), effective irradiance is approximately 50-70 mW/cm2. This is high for a portable device and comparable to mid-range panel output at similar distance.

The high irradiance is what allows Flexbeam to use shorter treatment times (10 minutes per programme) compared to lower-power wraps (20-30 minutes).

Treatment Programmes

Flexbeam offers three pre-set programmes, each running for approximately 10 minutes:

Programme 1: Recovery

• Focus: Post-exercise recovery, muscle soreness
• Mode: Continuous output at all three wavelengths
• Best for: Athletes, fitness enthusiasts, post-workout treatment

Programme 2: Pain Relief

• Focus: Chronic and acute pain management
• Mode: Pulsed output (specific frequencies not publicly disclosed)
• Best for: Joint pain, tendinopathy, chronic conditions

Programme 3: Rejuvenation

• Focus: Skin health, collagen stimulation, general wellness
• Mode: Alternating wavelength emphasis
• Best for: Anti-ageing, skin quality, general cellular health

The pulsing in Programme 2 is worth noting. Pulsed light delivery has been shown in some studies to produce different biological effects compared to continuous wave delivery, with certain pulse frequencies enhancing anti-inflammatory effects and pain modulation (Hashmi et al., 2010, Dose-Response, 8(3):313-328). The fact that Flexbeam incorporates pulsing while many competitors do not is a genuine technical advantage.

Battery and Portability

This is Flexbeam’s standout feature. The built-in rechargeable lithium battery provides approximately 30 sessions per charge (three 10-minute programmes). Charging takes roughly 2 hours via USB-C.

The practical implications are significant:

• Travel: Flexbeam fits in a carry-on bag and requires no power socket during use
• Convenience: No cables during treatment — strap it on and continue with other activities
• Outdoor use: Usable at the gym, on the pitch, or during travel without seeking a power outlet

For people who travel frequently or want to use photobiomodulation at their workplace, gym, or while commuting, battery power is transformative. Mains-powered wraps and panels are fundamentally limited to locations with power sockets, which constrains when and where you can treat.

Clinical Relevance

Flexbeam does not have device-specific published clinical trials. However, the wavelengths and parameters fall within well-established therapeutic ranges:

The 810 nm wavelength has particularly strong evidence for musculoskeletal conditions. Bjordal et al. (2003) in their systematic review published in the BMJ found that wavelengths in the 810-860 nm range showed the most consistent pain-reducing effects across multiple musculoskeletal conditions (327:1215).

Chow et al. (2009) in The Lancet confirmed that photobiomodulation at near-infrared wavelengths significantly reduces pain in chronic joint conditions, with the dose ranges Flexbeam delivers (4-12 J/cm2 per session at typical positioning) falling within the optimal therapeutic window (374(9705):1897-1908).

The combination of 660 nm with two near-infrared wavelengths (810 nm and 850 nm) provides broader spectral coverage than devices using only 660 nm + 850 nm, potentially engaging a wider range of chromophores in target tissues.

Best Use Cases

Flexbeam excels in specific scenarios:

Knee pain: The three-module design wraps effectively around the knee, positioning LEDs over the medial, anterior, and lateral aspects simultaneously. This is arguably the single best use case for the device.

Shoulder and neck: The adjustable angle allows positioning across the trapezius and posterior shoulder. The lightweight design means you can wear it while working at a desk.

Lower back: The three modules span approximately 15 cm of the lumbar spine. For localised lower back pain, this coverage is adequate; for more diffuse back pain, you may need to reposition during treatment.

Wrist and elbow: The compact size is well-suited to smaller joints where a large panel would be overkill.

Travel recovery: For athletes or frequent travellers, having a battery-powered device that delivers genuine therapeutic doses is valuable. Use it in a hotel room, on a plane, or at a training venue.

Post-surgical recovery: The portable, hands-free design allows treatment of surgical sites without requiring complex positioning of large panels.

Flexbeam is less ideal for:

Full-body treatment: Far too small. A full-size panel (Mito Red Light, PlatinumLED, Bontanny) is the right tool for whole-body photobiomodulation.

Facial skin treatment: LED masks designed for the face (Omnilux, CurrentBody) provide better coverage and are optimised for skin rejuvenation protocols.

Large area pain (full back, both legs): The treatment area is too narrow. You would need multiple repositioning sessions, which erodes the convenience advantage.

Price Analysis

Flexbeam is priced at the premium end of the targeted device category:

Device	Approximate UK Price	Form Factor
Flexbeam	£400-500	Portable, battery, 3-module
Kineon Move+	£350-400	Wearable, battery, laser+LED
NovaaLab pads	£100-300	Wraps, mains-powered
Mito Red Light MitoMIN	£200-300	Small panel, mains-powered

At £400-500, Flexbeam is 2-4 times the price of NovaaLab wraps and comparable to the Kineon Move+. The premium buys you battery power, superior build quality, triple wavelengths, pulsing modes, and a product designed to last.

Is the Price Justified?

For occasional users or those on a budget, no. A NovaaLab wrap delivers dual-wavelength therapy at a fraction of the cost.

For daily users who value portability and build quality, the price is more defensible. If you will use the device 5-7 times per week for years, the cost per session is low and the convenience of battery power earns its premium.

For professional athletes or serious fitness enthusiasts, the price is easily justified by the portability and performance.

Flexbeam vs Kineon Move+

These two devices compete directly in the portable targeted therapy category:

Feature	Flexbeam	Kineon Move+
Technology	LED only	Laser diodes + LEDs
Wavelengths	660/810/850 nm	808 nm (laser) + 650 nm (LED)
Battery	Yes (~30 sessions)	Yes
Treatment time	10 minutes	15 minutes
Target area	Versatile (any body area)	Primarily joints
Pulsing	Yes (3 programmes)	Yes
Build quality	Excellent (aluminium)	Good (medical-grade plastic)
Price	£400-500	£350-400
Versatility	High (adjustable modules)	Moderate (joint-focused design)

Flexbeam offers greater versatility — the adjustable three-module design works across more body areas. Kineon provides more focused treatment for specific joints and uses laser diodes for higher tissue penetration. For knee pain specifically, Kineon’s design is arguably better optimised. For general-purpose targeted therapy, Flexbeam’s versatility gives it an edge.

Strengths

• Battery-powered — true portability with approximately 30 sessions per charge
• Premium build quality — aluminium construction built to last
• Triple wavelengths (660/810/850 nm) — broader spectral coverage than most competitors
• Pulsing modes — three programmes including pulsed delivery for pain
• High irradiance for a portable device (~100 mW/cm2 at surface)
• 10-minute treatment time — short enough for daily compliance
• Adjustable three-module design — conforms to various body areas
• Lightweight (400g) — comfortable to wear during treatment

Weaknesses

• Premium price — £400-500 is significant for a targeted device
• Small treatment area — cannot substitute for full-body panels
• No app connectivity — no treatment tracking or protocol customisation beyond 3 programmes
• No transparent irradiance testing — third-party verified data would strengthen the value proposition
• No device-specific clinical trials — relies on general photobiomodulation evidence
• Limited facial treatment capability — not designed or optimised for skincare
• Three modules may not fully wrap larger body areas (thigh, full back)

Who Should Buy Flexbeam

Ideal for:

• Athletes and fitness enthusiasts wanting portable recovery therapy
• Frequent travellers who need photobiomodulation on the go
• People with chronic joint or muscle pain who will use the device daily
• Users who prioritise build quality and expect a device to last 5+ years
• Anyone wanting battery-powered, cable-free treatment sessions

Not ideal for:

• Budget-conscious buyers (NovaaLab offers comparable wavelengths at one-third the price)
• Those needing full-body treatment (buy a panel instead)
• Users primarily interested in skin rejuvenation (buy an LED mask)
• Anyone wanting extensive app-based tracking or data logging
• People who prefer the body-conforming flexibility of soft wraps over rigid modules

Verdict

Flexbeam is the best-built portable red light therapy device on the market. The aluminium construction, battery life, triple wavelengths, and pulsing programmes put it ahead of every competing targeted device on pure specification and engineering quality.

The price is high, and the treatment area is limited. If you need full-body coverage or primarily want facial skin treatment, this is the wrong device. But for targeted musculoskeletal therapy with genuine portability, Flexbeam sets the standard.

The comparison with Kineon is the most relevant: Flexbeam offers greater versatility across body areas whilst Kineon provides more focused joint treatment with laser diodes. Choose Flexbeam if you want one device for multiple body areas. Choose Kineon if you primarily need knee or elbow treatment.

Rating: 8/10 — Premium engineering and genuine portability in a targeted device, held back by a price that is hard to justify for casual users and a treatment area too small for larger body regions.

This review is editorially independent. Product details and prices were accurate at the time of writing and may change. See our methodology for how we assess devices.