1.CONNECTION. SETTING. GE: No battery not rechargeable. Working only while it plugging in. Power ups: Plug into any USB port. Long press On or Off. Short press switch mode. Timer: Auto off after 20 minutes. Use for 15 20 minutes 3 times per day see results in as early as 3 WEEKS. 2.Red Infrared Hand Wrist Wrap: Flexible and wraparound near Infrared red light therapy hand wrist wrap for relief, recovery, support, warm and long term use can deep improvement hand wrists finge discomfort or issues. 3.Fitted Hand Wrists Designed: Smaller, lightweight, compact, and convenient to use in your hand and wrist. Note it does need to be attached to power for use and Press Pold for 2s to Turn on/off. Red infrared hand wrist wrap belt helps for hand wrists finger discomfort. 4.Care Support Hand Wrist (holding often/mouse hand/using mouse frequently) The inner lining has a comfort plush, surface embedded 48 dual chip LEDs. Each LED is composed of 1 red light(660nm) near infrared light(850nm) diodes. 3 Options Modes intensity red infrared light, 50% intensity red infrared light, 10 Pulse 660nm 850nm. Bendable flex hand wrist wrap auto off after 20 minutes. 5.Sturdy, and Well Designed: Convenient fixed thumb hole, fit the curvature of the wrist region better design and universal power jack(USB Type C) compatible with a variety of power source devices. luxurious grade crystal fluffy inner lining, more Skin friendly and comfortable.