JS-5301 stopwatch 

JS-530110 lap ·Three row display, 1/100sec  ·Rowing frequency function  memory·Two countdown·Pacer·Temperature measure, calibrate, and alarm·Pulse measurement by finger touching·Calendar, clock, and alarm·Vibrate reminder  ·2pcs AAA battery·Blue backlight10道记忆 三排秒表计时 1/100秒 划水测频功能  两组倒计时器,节拍器 温度测量、温度校准、温度报警 红外线测心率 时钟、日历、定闹显示    振动提醒  2节7号电池  蓝背光Size: 93x67x25.5mm