Fourheart Rechargeable Hand Warmers,Double-Side Heating Gift for Raynauds Arthritic Sufferers Pain Relief, Ski, Hunting, Hiking, Winter Gifts (Black);

Best Customer Service: If have any problems with our products or service, kindly please feel free to contact us, we will response and handle quickly

Important Tips:
1.Please Keep away from water;
2.Do not charging and heating simultaneously;
3.Please stored in a cool dry place when not in use;
4.Put on Cloth pouch to avoid burns when they get too hot for skin contact especially say on the wrists or behind knees where skin is thinner and more fragile.

NOTE: In the first three times of charging, the battery has not been activated well, so it will work normally after the fourheart rechargeable hand warmers was used three times.

Specifications:
Input: 5V/2A;
Output: 5V/2A;
Weight: 135g;
Capacity: 5200mAh;
Size: 102*59*24mm;
Charging time: 2-3 hours;
Working Time: 5-10 hours
Temperature: constant 107°F(42°C)/118°F(48)/131°F(55°C).

How to make it be warm?
Press the middle button for 5 seconds.
When the three lights on, reached the highest temperature of about 131°F(55°C).
Use your hands to make a friction, which can adjust the temperature

Package includes:
1 X Lanyard;
1 X Micro USB cable;
1 X Instructions Manual;
1 X Cloth pouch with drawstring;
1 X 5200mAh hand warmer& power bank