Specification: Material: Aluminum Alloy ABS Voltage: 5V Output Power: 520mW Power adjustment: 5 Grade for Adjustment Display: LCD Display Battery capacity: 2600mAh Wavelength: 808nm and 650nm Lamp Beads: 17PCS Time Setting: 5 10 15 20 Minute Timer Size: 222 61 41.3mm Weight: 400g Package list: Host 1 Charging cable 1 Adapter 1 Anti-light glasses 1?Ergonomic Design?With a streamlined design and extremely light weight, this Pain Relief Therapy Device is safe and portable when you are at home or traveling. ?Care for Your Pets?Red light therapy device helps your animals reduce pain and skin problems! Suitable for professional, personal and animal use like cats, dogs, horses and so on. ?Accelerates Recovery?:We recommend using 2-3 times a day for 20 minutes to relieve knee,shoulder, back joint and muscle pain, arthritis pain and make it easier for you to recover from a sprain or a serious fall. ?Optimal Choice For Wellness? 660nm and 808nm hand-held red light good for body 660nm red light can be absorbed by the skin and promote blood circulation, 808nm light can penetrate the deepest to relieve joint and muscle pain. ?Upgraded Designed?:14pcs x 650nm and 3pcs x 808nm. More lights have been added to increase the efficiency of use.Customize your own mode: 5 10 15 20 minute timer.Energy levels for L1, L2, L3, L4. Press and hold the On Off button to turn it on. NOTE: The three beams of 808NM are invisible.