Illumination distance: 300-500 meters Maximum brightness: 6000 lumens Power supply: built-in double 21700 batteries ( batteries) Battery capacity: 10000mAh (measured 9950mAh) Power display, mobile power, aluminum alloy, German anti-glare design, 120 degrees wide-area lighting, bicycle handlebars can be installed within 3.3cm in diameter. Model No.:XHH0085 Headlight Light source type:12pcs T6 lamp beads + 4pcs L2 lamp beads Charging and discharging protection:Built-in overcharge and overdischarge IC, prolong battery life Battery indicator:25%, 50%, 75%, 100% real-time display of the duration of time Lens type:PC lens Charging input:5V/2A Voltage output:5V/2A Operating voltage:3.7V Luminous color:white Bead color temperature:7500K Charging time:about 10 hours Battery life:3 hours Placement:support upright, upside down Waterproof grade:IPX5 (rain, splash water) Product size:total length 164mm, width 47mm, height 33mm Product net weight:306g Dimming mode:4 kinds of lights (long two seconds to close) 1. High-light mode (16 lights all on) 2. High beam mode (12 lights on) 3. near light mode (4 lights on) 4. slow flash mode (16 lamps all light) Colour:Black Material:Aluminum Alloy Package Contents: 1 * Bicycle headlight 1set * Aluminum alloy bracket 1 * USB adapter 1 * 0.5 meter USB cable 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.