Save /Zero Measurement Button
Short press to confirm the measurement and send to the app via Bluetooth; Long press to zero the measurement.
On/Off/Unit Switching button
Short press to power on, Long press to power off; After power on short press to switch between inch and centimeter
Retract Tape Measure Button
Press and hold to automatically retract the tape measure
Tape Measure Using Snaps
Press down gently to unlock automatically, and you can easily lock to this locking hook when measuring
