Feature: 1. Adjust Strength: massage waist belt with 39 strength levels, you can easily adjust the pulse strength gear according to your preference and fitness level. 2. Temperature Adjust: Waist belt offers 3 different temperature to meet your various needs, effectively relieve waist discomfort and promote circulation. 3. Voice Promot: Waist heating belt with voice prompt function, press the switch to power on the host, prompts "Welcome to use the Smart massager". If the host is installed in the wrong direction or in poor contact, the host prompts "Host installation error" 4. 20min Timing: Waist massager belt preset single use time key 20 minutes, after adjusting the mode and pulse, start counting down, 20 minutes automatic shutdown. 5. Premium Fabric ABS: Pulse waist massage belt is made of fabric and ABS material, durable and comfortable to wear, helps to relax muscles and reduce tension in the waist. Specification: Item Type: Heated Waist Massage Belt Material: Fabric, ABS Battery: Lithium Battery 2000MAH(Included). Package List: 1 x Waist Massage Belt 1 x Voice Broadcasting Host 1 x Instruction Manual 1 x USB Cable 1 x Spray Bottle