-To ensure the waterproof tightness rate of diving flashlight, we have built-in 3 waterproof rings in the tail,so if it is difficult to tighten the tail cover after installing the battery, it is normal.And you could make more strength to tighten it.

-When using 18650,must use with 18650 battery holder(included) and ensure the battery positive and negative poles are all directed at spring, otherwise it may cause poor contact/short circuit.

100% Brand New
LED:LED
Power: 1 X 18650 3.7V Battery/3x AAA Battery/26650 3.7V Battery
The main purpose: Diving
Size : 5.9 x 1.34 x 1.57  inch
Switch mode: Head slide switch
This product is convenient and practical for family standing
Special operational needs (such as levee patrol, inspection, search, site inspection, security, first aid at sea, night observable, etc.)
Outdoor activities (hiking, camping, hunting, survival, hiking, dive sea, Chuigou, etc.)
Main Features: reflector / lens / light cup
High quality can be used for more than 100,000 hours, which eliminates the trouble of replacing the lamp

Suitable for Self Safety, hunting, cycling, climbing, camping and outdoor activity.......

Notice:
Please remove the batteries when not being used.
Please don't irradiate it to eyes,especially for children,children are lovely.
It may cause temporary blindness for the harsh light of flashlight.

Package include:1x Flashlight +1x18650 battery +1x USB Charger