8 infrared radiation LEDs & a 3-level large area of hot compress
The innovative design of infrared radiation arranged for concentrated heating on top of the cervical spine to efficiently relieve pain at the core; 630 nm infrared radiation penetrates to underlying muscles.
9-Independent heating film all-round protection of the neck and larger area of massage. Using speed heating technology, rapid heating in 5-10 seconds. 3-level hot compress, which can be adjusted to a suitable temperature according to personal preference.