Tease Wellness leveled up their Smart Heated Mug Kit 2.0 for busy people who have high (temperature) standards and good taste while combining multi-functional, innovative design. When the heating coaster is not in use you can charge your wireless devices. The details- Perfect sized mug with electromagnetic sensors (12 oz.) Smart Heated Coaster that works with the mug sensors to optimize temperature Innovative coaster doubles a wireless charger for iPhone, Android, Air Buds, etc. Smart Heated Coaster features zero-gravity safety sensor (it will only heat the included mug) Gift worthy packaging 2 in 1 lid and drip tray to keep even more warmth in and avoid tea stains USB block designed for standard 110 volt outlet Safety enhanced polarized wall plug included UL tested and FDA compliant Cord length: 2 feet / 24 inches Smart Heated Mug Kit maintains beverage temperature for up to 6 hours. It does not heat up or boil beverages Each mug and lid is hand glazed, and may have variations or 'blemishes' that are common characteristics in handcrafted ceramics. Care: Mug: Avoid dishwasher, hand washing is recommended to prolong use of sensors. Lid: Dishwasher safe Charging Coaster: Clean with damp cloth and mild cleaning solution. The unit itself is spill-resistant, but cannot be submerged in water; avoid exposing it to excessive amounts of water.