USB Charging Heating Insoles Size Cuttable and Washable Electric Foot Warmer Insoles, Size: 35-40(Black)

1. Battery capacity: 2100mAh
2. Charging voltage: 5V
3. Charging current: 400mA 7.4WH
4. Discharge: 4.2V 547mA/3.85V 505mA
5. Operating voltage: 3.85V/4.2V
6. Load impedance ： 8ohm
7. Working discharge time:
- High temperature: about 4 hours, about 55 degrees Celsius
- Medium temperature 75%: about 6 hours, about 50 degrees Celsius
- Low temperature 40%: about 9 hours, about 40 degrees Celsius
8. Heating cloth: about 10 x 6cm
9. Size: large size about 29.5cm, small size about 26cm

Features:
1. Velvet fabric, soft, comfortable and warm, sturdy and wear-resistant, not easy to leg color, smooth and glossy
2. Foam shock-absorbing shock absorption, breathable and sweat-absorbing, anti-odor, anti-mold, anti-bacteria, good cushioning, so that the feet are more healthy and comfortable
3. Palm of the foot is the main heating area, the heel part of the built-in rechargeable lithium battery, remote control receiving circuit and charging protection circuit.
4. With size line design, you can compare your foot size to choose the corresponding large or small size, cut along the size line (note: can not cut the area within the size line, so as not to cut the internal heaters)
5. Press the key of the remote control, the LED of the remote control will flash once, the LED of the insole will turn off, and the insole will stop working