【How to turn on silent mode】Long press the SET key in standby mode to enter the speaker flashing mode. Then press the MEM key to choose whether to turn on or off the voice function. 【Upgrade】A new generation of original ASP technology to measure more accurately, Use 7.1 x 7.8 cm LED full-screen digital display and high-definition backlight to make the line of sight clearer (Visible at night). 【One-key operation】Automatic inflation, Can be done by one person. Just press a button, 50 seconds to provide you with clear and accurate data, Sleep Automatic shutdown in 3 minutes. 【Voice broadcast and HD backlight】The large-screen display provides clear reading and voice broadcast function (only in English). The high-definition backlight also makes it suitable for the elderly and people with poor eyesight.