Feature: 1. Thick high-grade crystal velvet fabric, skin-friendly and soft, provides warmth and retains temperature, and stays securely in place 2. Even wiring and fine craftsmanship 3. Intelligent automatic mechanical charging with built-in safety switch; automatically powers off when the heating limit is reached for safe, explosion-proof operation 4. Fully charges in 10 minutes, providing heat for up to 6–8 hours; recommended charging time is 7–10 minutes Specification: Color: green, pink, gray, brown Material: PVC + cotton velvet Rated power: 500W Rated voltage: 220V Power supply mode: US plug charger Size: As shown in picture Package includes: 1 x Charging hot water bottle (empty, no water included) 1 x Charging cable Notes: 1. Please allow 1–3 mm size variation due to manual measurement 2. Monitor display settings may cause color variations in the image