1) 4x18650 cell battery pack 2) Silicon waterproof cover 3) 4400mAh rechargeable Pack

1.waterproof 18650 battery pack 2.with silicon waterprof cover 3.4400mAh, 8.4-12V 4. 4pcs rechargeable 18650 battery

Waterproof 4pcs 18650 li-ion rechargeable battery pack(4400mAh, 8.4v-12v)

Pictures:

Waterproof Battery Pack for Bike Lights