Description: Lightweight To Wear: This COB LED armband light is comfortable to wear during night running, hiking, and camping, providing 500LM brightness for safety and visibility Long-lasting Battery Life: With a built-in rechargeable battery and Type-C USB charging, this waterproof COB LED armband offers a long-lasting performance for daily use Three Level Adjustment: The COB floodlight features three adjustable levels of brightness and a red light warning function, making it versatile and practical for various outdoor activities Waterproof And Sweat Resistant: Designed with IPX4 waterproof rating, this COB LED armband light is sweat resistant and for outdoor sports like night running and cycling Buckle : The buckle of this rechargeable COB LED armband light ensures secure and adjustable fitting on your arm or leg, offering and stability during activities Specification: Color: As Shown. Material: ABS. Note: There might be a bit color distortions due to different computer resolutions. There might be a slight errors due to different hand measurement. Package Includes: 1 * Three level adjustable waterproof and sweat proof lightweight running light 1 * USB cable Built in battery: 400mAh polymer battery.