计时功能：正计时/倒计时两种计时功能 定时范围：99时59分59秒 时

Timing function: two timing functions: up and down/countdown <br>Timing range: 99:59:59 <br><br>Clock function: 12/24-hour conversion <br><br>CUSTOM countdown customization, can save a set of countdown <br><br>3-level volume adjustment (mute, soft, loud)

Timing function: two timing functions: positive timing and countdown<br>Timing range: 99:59:59<br>Clock function: 12 / 24-hour conversion<br>Custom countdown customization, which can save a set of countdown<br>3-gear volume adjustment (mute, low voice, loud)

Timing function: positive timing/countdown two timing functions. Timing range: 99: 59: 59 Clock function: 12/24 hour conversion. CUSTOM countdown customization can save a set of countdown. Level 3 volume adjustment (mute, low voice, high voice)