Bluetooth 3.0 Connection, ensures long transmission distance and wide compatibility. Up to 10 meters transmission distance, fully compatible with most desktops, laptops, and mobile phones, also suitable for most smart TV. Precise and sensitive key buttons with proper layout, up to 12ms response speed, provide excellent sense of touch and comfortable typing experience. Multi-Point Pairing, it can connect to up to 4 Bluetooth devices at the same time.