describe:1.3 Set Temperature and TimeThe controller is red for high temperature (149 to 167 ), blue for medium temperature (131 to 149 ), and green for low temperature (104 to 140 ). The red indicator light is 90 minutes, blue is 1 hour, and green is 30 minutes, so you don't have to worry about falling asleep or forgetting when using it, very suitable for beginners.2.Flexible and Easy to UseThe heated back massage has three detachable support columns, which can fix the spine well and perfectly fit your lower back. There are two elastic bands on the lumbar thermal massager to keep the massage heated back support in a comfortable position and prevent it from slipping. Very convenient to wear anytime and anywhere3.Solution to relieve low back painThe back pain heating pad is a built-in heating pad that can heat quickly, provide heat therapy, relieve waist muscle tension, abdominal pain, menstrual cramps and stomach discomfort, leg arthritis, etc., and enhance blood circulation Cycle, every woman should be loved and cared for4.Impressive Back MassageThe back band heat massage is built with 2 powerful massage motors to provide soothing vibration massage. It helps further relieve tension and soreness in the neck and shoulders, lower back, waist, thighs, and leg muscles.5.Perfect GiftThis belt is equipped with built-in cartilage strips to provide waist restraint and back support, it is an excellent health gift for men and women. Perfect gift for Christmas, Father's Day, Mother's Day, Thanksgiving and Valentine's Day.Specification:Product name: Intelligent hot compress beltExpanded size: 110cm*22cm/43.3*8.6 inchesSuitable size: Suitable for waist: 65CM-98CM/25.6*38.58 inchesScope of application: waist/backPackage includes:1 x Smart Heating Belt