2024new Night Cycling Running Lamp Waterproof LED Flashing Wrist Band Bracelet Portable Bike Light LED Wrist Lamp Flashlight USB charging multi-function wrist light waterproof warning light tail light The battery has a long battery life and sufficient power, so you don’t have to worry about the taillights crashing. Compact and lightweight, it’s portable, compact and powerful USB fast charging, fast charging anytime, anywhere via USB interface Powerful core, circuit board, built-in high efficiency LED driver for lithium battery management module Waterproof design, life-grade waterproof allows you to bid farewell to rainy troubles, ride as you like Applicable environment: daily carrying, self-defense, night fishing, camping, hiking, cycling. specification: Net weight: 20g Product size: 38*22MM With battery: built-in lithium battery Light source: 4*2835 white light 2*2835 red light Switch: white light 100% bright - white light 15% bright - red light - red light flash Material: ABS Continuous lighting time: 7 h Color: yellow, black, blue Specifications: USB fast charging, fast charging anytime, anywhere via USB interface Powerful core, circuit board, built-in high efficiency LED driver for lithium battery management module Waterproof design, life-grade waterproof allows you to bid farewell to rainy troubles, ride as you like Applicable environment: daily carrying, self-defense, night fishing, camping, hiking, cycling. Package Included: 1* tail light 1*USB charging cable 1* strap 1* buckle Notes: Due to the difference between different monitors, the pictures may not reflect the actual color of the item. Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement. Please leaving a message before you give the bad feedback, if the products have some problems. Thanks for your understandings