Dell Premier Wireless Keyboard & Mouse KM717 Supports both USB wireless and Bluetooth LE (USB receiver included) Power source: 2 AA batteries Keyboard layout: Japanese Unopened, brand new. Wireless features: Connect up to 6 Dell Universal devices wirelessly with a single receiver. Connect up to 2 devices via Bluetooth LE in addition to Dell Universal. A set of Dell keyboard and mouse with a slim design that supports Bluetooth LE (Low Energy), operating on about 1/3 the power of previous models. - Brand: DELL - Set contents: Keyboard and mouse - Design: Slim design - Color: Black - Product name: Keyboard and mouse