Main Features:<br />Bluetooth V3.0 interface standard<br />Operating distance: 10m<br />Working current: Less than 5mA<br />Standby current: 2.5mA<br />Standby time: 30 days<br />Charging time: 3.5 - 4 hours<br />Battery Capacity: 300mAh<br />Operating temperature: -10 - 55 degrees<br /><br />    Specifications<br />Specification<br />	 Product weight   : 0.145 kg                                                  <br />                        Package weight   : 0.190 kg                                                  <br />                        Product size (L x W x H)  : 22.5 x 13 x 0.8 cm / 8.8 x 5.1 x 0.3 inches                                                  <br />                        Package size (L x W x H)  : 23.5 x 14 x 1.8 cm                                                  <br />                        Package Contents: 1 x Bluetooth Kerboard↔? 1 x User Manual                                                	<br /><br /><br /><br />                                                <br />