Supply up to two devices with power at the same time. With the Wireless Charger Duo, you can quickly recharge two of your compatible devices with the inductive fast charging function up to 15 watts. Whether it's your smartphone, Galaxy Watch, Galaxy Buds and Galaxy Watch. Power your smartphone or Galaxy Buds on the left-hand side of the charging dock, or charge your Galaxy Watch – which is held in place with a built-in magnet – or your Galaxy Buds. A built-in air cooling system in the left-hand loading area helps to ensure even and fast charging. This charger is designed for indoor use and is powered via USB-C®. It is compatible with headphones, smartphones, and smartwatches.