Specifications:
1) BML223A-X: single wavelength
   BML223A-XX: two wavelengths
   BML223A-XXX: three wavelengths
2) High stabilization;
3) 270, 1000, 2000 Hz Tone
4) LCD display & backlight;
5) Battery energy indication in LCD;
6) Battery charge indication in LCD;
7) Energy save mode: about 10 minutes
   no operation will cause the device
   automatic power off (can be cancelled);
8) Full energy can support above 16 hours operation;

Technical parameters:

* After 5 minutes warm-up, 20±3°C, CW, FC connector