3-speed shoulder pad controller version electric shoulder hot compress warm vibration massager Product name: Controller version heated shoulder pads Product Model: D10220002 Material: diving cloth Product color: gray Power supply mode: USB charging Voltage: 5V Power: 7W Built-in battery: 5000mAh (mAh) Charging time: 3 hours 3 grades of temperature: low grade (40-50), medium grade (50-60), high grade (60-75) Product size: 45*32*1cm Functions and Features: Heated Massage 2-in-1 Shoulder Pads - You can enjoy 3 functions at the same time or individually Built-in 5000mAh large capacity battery 3-level heating and 3-level vibration settings, maximum temperature 75 degrees Heating and massage make the knees no longer tired