SUNLMG Rechargeable Hand Warmer 4000mAh Power Bank/Portable USB Electric Hand Warmers Battery Charger Best Gift in Winter for Women/Man,Blue

Rated voltage: 5VPower capacity: 4000mAhShell material: plasticConstant temperature: 55°Duration: 3.5 hrsSelf-fast charging is full only: 3.5 hoursCan charge mobile phones such as iphone: 1.5 timesIf you have any questions, please contact us and...