Portable Mini Electric EMS Neck Massager Stimulator Pain Relief for Shoulder Cervical Waist Massage 1. Use waterproof PET patches, can be repeatedly washed and reused. 2. Using simulated leather fabric, soft skin feelings, comfortable to use. 3. High resolution screen, easy to adjust the massage instrument gear. 4. Large capacity polymer lithium battery, stable energy consumption, longterm endurance, each massage for 15 minutes, can be used for 8 days. Specification: Power Supply: Polymer lithium battery Usage Mode: A-F (6 modes) 9 levels of massage strength Package List: 1 x Neck Massager or 1 x Patch Depend on your choice Note: 1. Due to the different monitor and lighting effect, the actual color of the item may be slightly different from the color shown on the pictures. 2. Please allow 1-3cm error due to manual measurement. (1 inch = 2.54 cm) Thanks for your support :)Portable Mini Electric EMS Neck Massager Stimulator Pain Relief for Shoulder Cervical Waist Massage 1. Use waterproof PET patches, can be repeatedly washed and reused. 2. Using simulated leather fabric, soft skin feelings, comfortable to use. 3. High resolution screen, easy to adjust the massage instrument gear. 4. Large capacity polymer lithium battery, stable energy consumption, longterm endurance, each massage for 15 minutes, can be used for 8 days. Specification: Power Supply: Polymer lithium battery Usage Mode: A-F (6 modes) 9 levels of massage strength Package List: 1 x Massager or 1 x Patch (depend on your choice) Note: 1. Due to the different monitor and lighting effect, the actual color of the item may be slightly different from the color shown on the pictures. 2. Please allow 1-3cm error due to manual measurement. (1 inch = 2.54 cm) Thanks for your support :)