Product size:5X3.8X4.2cm
Light Source:6pcs white LED-150LM,20pcs red LED-30LM
Battery: 
front light:1pc  3.7V, polymer battery (included) 
rear light:1pc  3.7V,  polymer battery (included) 
Operation modes: 4 different modes (front light)
6 different modes (rear light)             
Operating time:2 hrs                                                     

Charging time: 1 hr                                                   
Color:trans.clear & trans.red
Product material:PC                                      
Incl. 2PCS USB cable                                                      
Packing: 1pc front light & 1pc back light/color box,10 sets/inner box, 100 sets/carton