Product name: power bank hand warmer (double-sided heating) Product material: PVC Battery capacity: 5000mA Product size: approx. 7.5*9cm Packing size: approx. 12*6*10.5cm Single piece net weight: approx. 93.3g Including packaging gross weight: approx. 152.2g Product color: green, pink, blue Product charging time: about 4 hours Product temperature: first gear: 45C; second gear: 60C (2 gear can be adjusted) Product use time: continuous warming time: 3-6 hours (related to ambient temperature and gear) Input/output: 5V/1A Package List 1 x Hand Warmer 1 x Charging Cable 1 x Velvet Bag 1 x Gift Box Due to the different monitor and light effect,the actual color maybe a slight different from the picture color.Please allow 1-2cm differs due to manual measurement. 11. Comfortable and non-slip: Warm, portable, compact, non-slip with one hand. Lightweight and convenient, necessary to go out, stylish appearance, matching the size of the palm, not only ensures a comfortable feel, but also makes full use of space. 22. Safe design: Environmentally friendly lithium-ion battery, shockproof, anti-scald, anti-skid, explosion-proof, no radiation, green and healthy heat transfer. Ensure safe use. 33. Fast heating: Press the switch to immediately dissipate heat for you. Quickly heat both sides in a few seconds. This hand warmer has 2 temperature gears, the first gear: 45; the second gearis: 60. Equipped with double-sided heating and 2A fast charging technology, so your hands will not be delayed. 44. Large battery capacity: It's not only a hand warmer, but also an emergency power bank. This electric hand warmer is equipped with a 5000mAh battery, which can be heated for 6 hours, allowing you to enjoy outdoor sports away from the cold. In addition, it is not only an ordinary hand warmer, but also a portable power bank, which can charge your mobile phone or tablet. The cold light digital display hand warmer, the visualized temperature is safer and more assured, and the use is more secure. 55. Ideal for winter: This really helps warm your hands and promote blood circulation. In the cold winter, this warm palm treasure is the perfect gift for children, mothers, sisters, grandmothers, girlfriends and colleagues on Christmas, birthday, Thanksgiving, and Valentine's Day.