product description 【LED lamp beads: XPG-2 [Number of lamp beads: 2 [Color temperature: 6500K (white light) [Reflector: Optical Lens [Lighting gear: 5-speed mode (low-medium-high-strobe-SOS) [Mode: (Low - Medium - High - Strobe - SOS) 【Working voltage: 3.0V-4.5V 【Working current: 0.25A-0.5A-1.0A [Lighting distance: 200-300 meters 【Application: Cycling/Running/Warning 【Waterproof grade: IP65 [Standard color: black+red [Lamp size: 29*43*82mm [Lamp weight: 105g] [Battery size: 10*34*50] [Power supply: Built-in polymer battery [Battery capacity: 1800Mah] 【Battery voltage: 4.2V