COB LED light bulb (35 lumens) Round light body, lightweight and durable Elastic band installation code: easily installed on backpack/tail bag/shirt pocket USB charging (with USB 2.0 cable) Low battery reminder (automatically switches to flash mode) 6 lighting modes: Highlight(1h)/Lowlight(10h)/Flash(30h) Flash (10h)/pulse (10h)/vibration (13h) Charging time: 2 hours Memory mode: next time the light is turned on Still using the last lighting mode Power saving indicator Life waterproof