Battery capacity: no charge required
<br />Dimensions: Standard US dollar Ring size 7/8/9/10/11/12
<br />Wear: finger to wear
<br />Applicable system: Andrews, WP, Blackberry, ios
<br />Additional features: audio and video entertainment, step, support NFC function, health monitoring, mobile phone / call, wireless sharing / sharing, information push, privacy protection
<br />Compatible platforms: Andrews, WP, Blackberry, ios