1. Connection type: Logitech Unifying Union Protocol (2.4GHz).\r\n2. Special buttons: mute, turn up the volume, turn down the volume.\r\n3. Connection / Power: Turns the switch on/off.\r\n4. Battery Details: 2 AA batteries.\r\n5. Battery life (non-rechargeable): Up to 18 months.\r\n6. Key life: Up to 5 million keystrokes.\r\n7. Tap the noise: All buttons are no higher than 55dBA.\r\n8. Wireless range: Approx. 10m (33 feet).\r\n\r\nSpecification:\r\n1. Product size: height 139.9mm (5.5 inches), width 354.3mm (14.0 inches), depth 23.5mm (1.0 inches).\r\n2. Touchpad size: 47 x 76mm.\r\n3. Weight: 390 grams (when battery is included).\r\n\r\nPacking list:\r\nWireless touch keyboard x 1\r\nUnifying Excellent Receiver x 1\r\nUser Documentation x 1