item type: Massagers commodity quality certification: ce size: electric picture: No package weight: 0.16kg (0.35lb.) package size: 12cm x 17cm x 19cm (4.72in x 6.69in x 7.48in) unit type: piece type: suggestive: No model number: electro Massager rope ring material: Plastic brand name: BOMBOMDA Electric Pulse Ring Physiotherapy Massager Massagers Feature: The intensity of the electric can be adjusted, clockwise increases, counterclockwise decreases. Trembling and numb electric . Patients with heart disease or those using pacemakers are prohibited. Please lubricate well before use. Description: Material:Metal, Size:7.6x2.6 cm Battery:2 pcs AAA battery, not included Output Power:MAX 100V/20mA Frequency:2-100 Hz Before and after use, please use warm water to clean the accessories contacting with the body, and regularly use 75% alcohol to disinfect. Package List: 1 x Host 2 x Ring 1 x