Main Features:<br />- Support one driving two bluetooth devices <br />- Voice control of YES / NO answer<br />- Voice prompt / Re-dial<br />- Call number prompt <br />- Battery: 120mAh polymer <br />- Charging voltage: 5V<br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />    Specifications<br />General<br />	 Model  : S9i                                                  <br />                        Color : Black， White                                                  <br />                        Wearing type : In-ear with ear hook                                                  <br />                        Function : Microphone， Voice control， Answering phone， Song switching， Bluetooth                                                	<br />Specification<br />	 Connectivity : Wireless                                                  <br />                        Application : Sport                                                  <br />                        Sound channel: Two-channel (stereo)                                                  <br />                        Sensitivity : 110dB                                                  <br />                        Talk Time: More Than 3.5 Hours                                                  <br />                        Music Time: More Than 3 Hours                                                  <br />                        Standby time: More Than 110 Hours                                                  <br />                        Charging time: Less Than 1 Hour                                                	<br />Extended Function <br />	 Bluetooth: Yes                                                  <br />                        Bluetooth version: V4.0 + EDR                                                  <br />                        Bluetooth distance: W/O obstacles ≤10m                                                  <br />                        Bluetooth band: 2.4 - 2.48GHZ                                                  <br />                        Bluetooth protocol: A2DP， AVRCP， HFP， HSP                                                  <br />                        Bluetooth mode: Hands free                                                	<br />Dimension and Weight<br />	 Package weight  : 0.12 kg                                                  <br />                        Product size (L x W x H) : 15 x 9 x 4.5 cm / 5.90 x 3.54 x 1.77 inches                                                  <br />                        Package size (L x W x H) : 14 x 14 x 4.5 cm / 5.50 x 5.50 x 1.77 inches                                                	<br />Package contents<br />	 Package contents: 1 x Earphone， 1 x Ear Hook， 3 x Pairs Ear Cap， 1 x Charging Cable， 1 x English User Manual                                                	<br /><br /><br /><br />                                                <br />