Smart Charger 3-1 in Silver

- Smart Warmer-Charger in Silver- Slim and lightweight- Switch it on, slip it into the knit sleeve, and place it in your pocket for comforting warmth in 1 minute - Use included USB to micro USB cable to provide backup charging power to your cellphone- Features built-in flashlight- Ideal for winter commuters and recreation activities- Warms up to 104 degrees fahrenheit- 360 degree rotary switch- Can be recharged over 500 times- Aluminum shell for thermal conductivity- Charge unit with included USB cable in 3.5-5 hours- Single Use Duration: up to 5 hours with warming, up to 50 with flashlight-use only