Indication

No display

No display

LCD digital display

LCD digital display

Power requirement

In charging: AC220V±0%/50Hz±2% In using: DC4.3-4.8V

In charging: AC220V±0%/50Hz±2% In using: DC4.3-4.8V

In charging: AC220V±0%/50Hz±2% In using: DC4.3-4.8V

In charging: AC220V±0%/50Hz±2% In using: DC4.3-4.8V

Output ultrasonic frequency

2.5MHZ±10%

2.5MHZ±10%

2.5MHZ±10%

2.5MHZ±10%

Out ultrasonic power

< 10mW/cm2

< 10mW/cm2

< 10mW/cm2

< 10mW/cm2

Overall sensitivity

≥90dB

≥90dB

≥90dB

≥90dB

External size

30cm*25cm*15cm

29cm*19cm*9cm

30cm*25cm*15cm

29cm*19cm*9cm

Gross weight

1.5kg

0.5kg

1.5kg

0.5kg