This chest strap is designed for monitoring your heart rate. It is useful to help you keep fit.<br /><br />Features: <br />Wireless chest strap to monitor your heart rate.<br />Support device: iPhone4s 5 5s 5c 6 6 plus itouch5 iPad 3 4 mini air &amp; Android 4.3 or newer devices with bluetooth 4.0.<br />Applicable software: Runtastic・ 60beat・ wahoo fitness・ wahoo utility・ Endomomdo・ miCoach.<br /><br />Specifications:<br />Color: Black<br />Material: Rubber<br />Power: CR2032<br />Transmitting range: ?10m / 33ft<br />Net weight: 62g / 2.2oz<br />Package size: 14.5 * 7 * 5cm / 5.7 * 2.8 * 2.0in<br />Package weight: 103g / 3.6oz<br /><br />Package List:<br />1 * Chest Belt<br />1 * User Manual (English)<br><img src="//agdetail.image-gmkt.com/m430/001/347/828347001/img/agdetail.image-gmkt.com/001/347/828347001/img/img.tomtop.com/product/xy/2000/2000/p/tt/y/0/y0192-2-97b5.jpg" /><br>$$<img src="//agdetail.image-gmkt.com/m430/001/347/828347001/img/agdetail.image-gmkt.com/001/347/828347001/img/img.tomtop.com/product/xy/2000/2000/p/tt/y/0/y0192-6-97b5.jpg" /><br>$$<img src="//agdetail.image-gmkt.com/m430/001/347/828347001/img/agdetail.image-gmkt.com/001/347/828347001/img/img.tomtop.com/product/xy/2000/2000/p/tt/y/0/y0192-1-97b5_1_.jpg" /><br>$$<img src="//agdetail.image-gmkt.com/m430/001/347/828347001/img/agdetail.image-gmkt.com/001/347/828347001/img/img.tomtop.com/product/xy/2000/2000/p/tt/y/0/y0192-5-97b5.jpg" /><br>$$<img src="//agdetail.image-gmkt.com/m430/001/347/828347001/img/agdetail.image-gmkt.com/001/347/828347001/img/img.tomtop.com/product/xy/2000/2000/p/tt/y/0/y0192-3-97b5.jpg" /><br>$$<img src="//agdetail.image-gmkt.com/m430/001/347/828347001/img/agdetail.image-gmkt.com/001/347/828347001/img/img.tomtop.com/product/xy/2000/2000/p/tt/y/0/y0192-7-97b5.jpg" /><br>$$<img src="//agdetail.image-gmkt.com/m430/001/347/828347001/img/agdetail.image-gmkt.com/001/347/828347001/img/img.tomtop.com/product/xy/2000/2000/p/tt/y/0/y0192-1-97b5.jpg" /><br>$$<img src="//agdetail.image-gmkt.com/m430/001/347/828347001/img/agdetail.image-gmkt.com/001/347/828347001/img/img.tomtop.com/product/xy/2000/2000/p/tt/y/0/y0192-4-97b5.jpg" /><br>