Featured here is a 2-in-1 powerbank with hand warmer function. It comes in a compact oval shape and is has LED indicators for showing temperature and battery power. This hand warmer powerbank can be used to charge most electronics digital products and can keep your hand warm in cold winters.
 
Features:

• 2-in-1 heater/power bank.
• Double-sided hand warmer with power bank.
• LED temperature/battery power indicator.
• Oval shape.
• With buttons on the side.
• Compact and portable design.
• Easy to carry and use.
• Keep your hand warm in cold winters.
• Power bank can be used to charge most electronics digital products.

 
Hand warmer:

• Double-sided heat hand warmer.
• LED color temperature status.
• Temperature control for phase Ⅰ: 40℃ (104℉);  Ⅱ：45℃ (113℉); Ⅲ：50℃ (122℉); Ⅳ： 55℃ (131℉), users in accordance with suitable temperature adjustment the temperature, the operation is very easy.
• OLED, real time monitoring of febrile temperature and battery capacity.
• Hold it to bring you spring-like warmth.

 
Power bank function:

• Output 2A, capacity 4000mAh, cell conversion efficiency of 95% or more, super powerful.
• Ultra-thin and lovely design.
• Top grade gift everybody will love.

 
Parameters:

• Materials: ABS + aluminum.
• Battery capacity: 4000mAh.
• Temperature: Ⅰ: 40℃ (104℉);  Ⅱ: 45℃ (113℉); Ⅲ: 50℃ (122℉); Ⅳ 55℃ (131℉).
• 4000mAh all-around heating time:  high 5~6h 55℃ (131℉), low 7~8h 40℃ (104℉).
• Operating temperate:  -20 ℃ (-4℉), - + 50 ℃ (122℉).
• Input:  5V/1A or 5V/2A.
• Output:  5V/2A.
• Charging time: 2H (charging input 2A).