... and AC adaptor. 2.Duration:5~6 hours 3.Battery charger for mobile phone. 4.OEM accept. Description:1. Power ... supply from DC&USB, easy to heat / light, safe and reliable.2. Fashionable and ... blood micro-circulation,5, Easily cleaning, scientifically and Environmental Protection.5. Working time: 4 hours ... , USB cable USB electronic rechargeable hand warmer