Targeted areas
A practical choice for knees, shoulders, feet and other focused treatment areas.
Portable targeted system
NrG-SPARK
—Loading reviews…Targeted light therapy that travels with you.
$279
Spark is designed for focused areas at home or on the go, combining four red and near-infrared wavelengths with rechargeable power, adjustable brightness and optional pulsing in a compact handheld format.
630 / 660 / 810 / 830 nm
10,000 mAh battery
55.643 mW/cm² @ 3 in · spectrometer
12 high-power dual-chip LED lenses
1-year warranty
What’s includedRechargeable handheld system
1-Year WarrantyPortable system coverage
Free Standard ShippingContiguous U.S. · Utah pickup available
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1-Year WarrantyPortable system coverage
Spectrometer-Measured55.643 mW/cm² @ 3 in
USB-C Rechargeable10,000 mAh battery
Free Standard ShippingContiguous U.S.
Who it is for
Portable light for targeted sessions.
Choose based on coverage, space, portability and how much repositioning fits your routine.
Portable routine
Rechargeable power and a rear hand grip make it easy to move between rooms or take with you.
Focused entry point
A lower-cost way to add red and NIR light without committing space to a panel.
Price
$279
Wavelengths
630 / 660 / 810 / 830 nm
Measured irradiance
55.643 mW/cm² @ 3 in · OHSP-350IR spectrometer
Solar meter reading
1046 W/m² @ 3 in · 104.6 mW/cm² converted
LED architecture
12 high-power dual-chip LED lenses
Brightness
25% / 50% / 75% / 100%
Battery
10,000 mAh
Charging
USB-C · 5 V / 2.0 A
Dimensions
5.9 × 3.7 × 0.9 in (150 × 95 × 23 mm)
Weight
1.0 lb (0.45 kg)
Pulse
Up to 9999 Hz
Warranty
1 year
Compare SPARK’s 630 / 660 / 810 / 830 nm channels with the full NrG Light spectrum →
Measured output
Spark irradiance measurements.
At 3 inches, these measurement photos document 55.643 mW/cm² on an OHSP-350IR spectrometer and 1046 W/m² on a solar meter—the equivalent of 104.6 mW/cm².
Equivalent to 1046 W/m² · 3 inches
Core red + NIR spectrum
Serious capability in a portable format.
Spark is not meant to imitate a full-size panel. It is built to do the portable job exceptionally well: four targeted wavelengths, rechargeable power, multiple red/NIR modes, four brightness levels, pulse control, a built-in timer, and a rubber rear grip band in a compact aluminum housing.
Physical details
Designed to travel.
USB-C charging
Simple 5 V / 2.0 A input for the internal 10,000 mAh battery.
Rear hand grip
The rubber rear band helps secure Spark in your hand during use and transport.
On-device controls
Switch R/NIR modes, pulse, brightness levels, and session timing directly on the device.
Manual & setup
Spark setup, controls, and care
Use the illustrated Spark manual for first-session setup, button functions, charging, battery care, troubleshooting, specifications, and warranty information.
Customer experiences
Reviews of NrG-SPARK.
Reviews from Spark customers, including customer photos and video links when submitted.
FDA-Listed Class II Medical Devices