Features: Electric Muscle Stimulator Size: 22 x 19 cm(approx) Quantity:1PC Power Supply: 2*AAA Battery (not include) Mode: 6 Level: 9 Material: ABS Function: Bodybuilding plus Simulated Motion plus Physical Exercise plus Easy to install Feature: 1. Firms,Tones,Strengthens and Tightens Muscles. 2. Electromagnetic pulses help firm and define your core with strengthening muscle contractions. 3. Easy push-button operation with 6 modes. 4. Electrical muscle stimulation (EMS) Technology. 5. 1 days 1 times,every 30 minutes of training,exercise and tight muscles. 6. Using the original training pulse with the frequency of specific current. 7. Design the training method of effective exercise muscles. Note: 1.Please allow 0.1-0.3cm differences due to manual measurement, thanks. 2.Please understand because of the light irradiation or computer display difference, so I can't guarantee photos and real color is 100 the same. The merchant warrants that their products comply with all applicable laws, and are offered only if they comply with Joom's policies and EU Product Safety and Compliance laws.