High-powered bike light:       

1.LED: 1x XML2 10W LED              

2.Light output: 500 Lumens / Max output            

3.Battery: 1x 18650 Li-ion battery,3.7V,2200 mAh(Included ) 

4.Length of USB cable: 20 cm    

5.Size: 94x81x40 mm

6.Weight: 133 g   ( Battery included )

7.Material: ABS,Acryl,Silicone.

8.Function(5 light modes): 100% brightness,30% brightness, white light and yellow light flash alternately,yellow light,OFF.  Moreover,press the switch and hold about 3 seconds to turn on the warning light( red and blue light flash alternately),press the switch and hold about 3 seconds to turn off.   

9.Water resistance: IP44

10.Runtime: 3h / High mode, 6h / Low mode   

11.Charging time: 3.5 h    

12.Battery indicator: 100%-75%-50%-25%.