Ergonomic, the pendant feels comfortable and fits perfectly. The appearance is stylish and , with a dot matrix display design. The intensity and heat are clear at a glance. Convenient and wear-free, it can be used anytime, anywhere. The product is made with a silica gel glaze process, which is comfortable to hold and makes the massage more comfortable to wear. 5S fever, three-stage constant temperature hot compress (37-39 degrees Celsius), (39-41 degrees Celsius), (41-43 degrees Celsius), can be used for 100 minutes when the heating function and pulse discharge are turned on. Multi-intensity switching: 15 pulse intensity levels can be adjusted as desired, suitable for cervical spine problems, meeting the needs of different groups of people, 4 modes. Power supply: Charging Control method: Fixed button Applicable parts: Neck Massage techniques: 4 main modes: Combination / Massage / Percussion / Scraping Working time: 15 minutes automatic shutdown when in use, 3 minutes automatic shutdown when not in use Special function: TENS pulse Electrode material: 304 stainless steel : 15 gears Net weight: 60g Pulse width: 30-80uS Color: Pearl White Battery Capacity: 500 mAh Rated Input: DC/5V Maximum Power: 5W Quiet Current: Less than 100uA Dimensions: 44x54x18mm/1.73x2.13x0.71 inches Color: White Material: plastic Package Contents: 1 * Neck Massager Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.