Features:<br>Wireless Heartbeat signal transmitted from chest band frequency at AM5.3KHz. <br>Time display with Hour, Minute, Second.<br>Alarm clock function.<br>Alarm sounded when heart rate exceeds the upper and lower limit values(60-220).<br>Timing (max. time-keeping is 23 hour, 59 minutes, 59 seconds, 99).<br>12 or 24 hour display format.<br>Backlight and Noctilucent function.<br>Keystroke tone.<br>Waterproof up to 3 meters.<br>Descriptions:<br>Chest transmitter strap66-95cm(Elastic)<br>LanguageEnglish<br>Movement typeElectronic<br>Waterproof Depth <br>3 meters<br>Close Hooks Buckle<br>Case ShapeRound<br>Function<br>Alarm Clock, Heart Rate Tracker,24 hour instruction, World Time, etc.<br>Specifications:<br>Material: rubber strap, steel case <br>Color: black<br>Total size:245*22mm<br>Dial size:41*16mm<br>Packing Includes:<br>1 x Watch<br>1 x English manual<br>1 x Chest transmitter strap <br>Notes:<br>1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.<br>