Cell type: Liquid lithium ion battery (18650)

Applicable type: Universal type
Pool type: cylindrical aluminum shell
Shell material: aluminum alloy + plastic
Additional features: heating
Size: 10.5*8*5cm

Features:
Cute & Clever Design- So much more than just an adorable device, this hand warmer also doubles as a power bank. The compact design allows you to carry this easy-to-use hand warmer in your pocket, wherever you go. Use it while working, Christmas shopping, traveling, ice-skating, camping or any outdoor activities.
Keep Warm- Easy to turn on and off, the hand warmer provides instant heat, and features an automatic time control to prevent overheating.
Charging Feature- In addition to the hand warming feature, this multi-purpose hand warmer can be used as a power bank for your phone, thanks to the 2600mAh battery capacity.
Safety First- Made of high-quality materials, this device features abs plastic, silicone, and aluminum.