Package included: 
<br />2 x 18650 Rechargeable Battery 
<br />
<br /> Features:
<br />Voltage:3.7V
<br />Capacity:4200mAh
<br />Rechargeable battery
<br />High rate discharge,no memory effect
<br />Specifications:
<br />Size:18 x 65 mm(D x H)
<br />Color:Red
<br />