Specifications: 1. Black elastic belt+super bright LED light+ABS engineering plastic battery box. 2. Antioxidant & anti-corrosion. 3. Adjustable length: approx 81cm-96cm (elastic more than 96cm). 4. Please dismantle the battery box when cleaning it, and other accessories hold-on. 5. Powered by 2 button cell batteries. 6. battery voltage: 3v. 7. Product weight: 146g. Package includes: 1x LED Waist Bag (batteries included) Allnice strive to provide exceptional products and services. Have any questions, please contact us immediately so that we may resolve the issue for you.