2x Ultrafire 18650 batteries
Ultrafire 18650 - 4200mah rechargeable battery suited for professional laser pointers. The 18650 batteries can be charged up to 500 times without losing any energy. Besides its long lifespan it’s also protected against over and undercharge so you won’t damage the battery when it’s on the charger to long or short.
You will receive 2x Ultra-fire 18650 3.7V 4200 mAh rechargeable batteries.