Speaker bike light:       

1.LED: 1x XPG2 5W LED           

2.Light output: 180 Lumens / Max output       

3.Battery: 1x 103040 Polymer Li-ion battery,3.7V,1200 mAh (Included )       

4.Length of USB cable: 20 cm               

5.Size: 100x61x52 mm

6.Weight: 85 g   ( Battery included )

7.Material: ABS,Acryl,Silicone.

8.Function(3 light modes): 100% brightness,40% brightness, Strobe,OFF.    

9.Horn Volume: 100dB/Press the switch and hold 3 seconds to change the sound mode.           

10.Water resistance: IP44

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

12.Charging time: 2 h   

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

14. Anti-theft system: press the switch and hold about 3 seconds to turn on,press the switch and hold about 3 seconds to turn off.