Features:
Output bright can come to above 300 lumens [lm]
Water-Resistant, you can use it in a rainy day
Extensive Lifetime of Cree LED (100,000 hours)
It can be a guide when you take cycle at night
Adjustable base is provided for each head lamp, with back and forth inclination
One button switch : On, Off, High, Medium, Flashing, Zoom In & Zoom Out
Model of Battery required: 1x 18650 3.7v
Model of LED: CREE Q5 LED

AC Battery Charger :
The AC adapter easily folds out to charge and pack away
Smart charger can charge two 18650 Li-ion batteries one time
Suitable for 18650, 16430, 14500, LIR123A, 10440 Li-ion for 2pcs batteries
LED indication for Power On / Charging / Full charge
AC 110v-240v 47-63Hz input (international charger, also can be used worldwide)
Does not support car power

18650 Rechargeable Battery :  
Model: 18650  
Voltage: 3.7V  
Battery Capacity: 2400mAh  
Size(mm): 64.5 (length) x 18.2 (body diameter)  
Net Weight(2pcs): 100g

Package Includes:
100% Brand New
1 X CREE Q5 LED Rechargeable Headlamp
1 X AC Charger (110v-240v) for this flashlight ( Note please charge TWO batteries at ONE time )
2 x 18650 3.7v 2400mAh Rechargeable Battery
1 X AC Plug Adapter specificlly suits for your country (FREE)