This wireless keyboard has tri mode connection (BT4.0+BT4.0+2.4Ghz Wireless): Support 3 devices at the same time and quickly switch between them through mode switch button. Two channels for BT 4.0 connection offer 10M operation distance and auto reconnection. One channel for 2.4Ghz USB Dongle with powerful and reliable connection. Features 12 commonly used multimedia keys for instant access to media controls. Universal Compatibility: supports all device with Bluetooth or USB port. It also features LED indicators for Caps function, mode and Low Battery. It also incorporates a minimalist and spill resistant design, approximately 10 million keystrokes. Equipped with rubber pads to assure a stable position and optimum comfort of the keyboard and avoid slipping. Low-profile Keycaps: Providing an unbeatable finger touch feeling. This wireless mouse has tri mode connection (BT4.0+BT4.0+2.4G Wireless): Support 3 devices at the same time and quickly switch between them through mode switch button. Two channels for BT 4.0 connection offer 10M operation distance and auto reconnection. Features a high-performance sensor, fully adjustable DPI: 800/1200/1600. Includes a non-slip metal wheel for a better grid with scroll and 4 buttons. Energy saving on/off switch. Ambidextrous design. “Plug and Play”.