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.<br> 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.<br> 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.<br> 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.<br> 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.