Feature: 1. 2 IN 1 Function: Coffee mug warmer built-in wireless receiving coil, it\u0027s aslo wireless charger compatible with iPhone13/12/12 Mini/12 Pro Max/SE/11/11 Pro/11 Pro Max/XR/Xs Max/XS/X/8/8 Plus, Galaxy S20/S10/S9/S8/Note 10, and other smart phone supporting wireless charging. 2. 55℃/131℉ Intelligent Constant Temperature: Beverage cup warmer built-in intelligent heating module, keep your coffee and hot beverage in 55℃/131℉ in 24 hours, enjoy warm beverage anytime. 3. Premium Double Layer Cup: Coffee mug made from double-layer food-grade 304 stainless steel liner, thermal insulation and keep constant temperature. Not rust, safe to use and easy to clean. 4. Leakproof and Dustproof Lid: 300ml/10.5oz capacity cup with transparent PC cover, built-in silicone seal ring, leak-proof and dust-proof. The cup cover has a push-pull hole, you can put a straw in it, or you can push open the cover hole and drink directly. 5. Thermal Insulation and Safe Protection: Thanks to the wireless inner core induction heats up, the cup body and wireless charger base do not get hot. The temperature control chip has an overheating protection, safe and comfortable to use. Specification: Specifications: Main Material: 304 Stainless Steel + PC Color: White / Black / Green (optional) Cup capacity: 350ml / 12fl.oz Power: 15W Power supply: USB Cup Size: 116 * 120mm / 4.5 *4.7in Weight: About 260g / 9.2oz . Package List: 1 * Cup 1 * Lid 1 * Charging base 1 * Charging cable 1 * Manual