Material: Mesh velvet+PU+microfiber cloth

Color: black

Charging voltage: 5V1A

Charging current: 400mA 7.4WH

Discharge current: 4.2V 547mA 3.85V 505mA

Working voltage: 3.85V/4.2V

Battery capacity: 2100mAh

Heating cloth size: 10*6cm

Load impedance: 8 ohmsMade of light, soft and environmentally friendly materials with good elasticity, it can effectively reduce the vibration caused by foot walking and improve the walking experience.This electric heating insole is designed with mesh surface, which is light and comfortable, breathable and sweat-wicking, fits the foot perfectly, and can be fixed without straps. Three adjustable temperature: low-grade 40 ℃, mid-grade 50 ℃, high-grade 55 ℃, to meet the needs of different groups of people.Built-in lithium battery, carbon fiber material heats up quickly, can be heated continuously for 4-10 hours, and the warmth retention is very good, even if it is minus ten degrees, you will not feel cold.It can improve cold feet, effectively stimulate blood circulation in feet, promote metabolism, and help you resist cold weather. It is suitable for students, office workers, outdoor workers, the elderly, people who are afraid of cold, people who like outdoor sports or winter travel.