"850/1300/1310/1490/1550/1625nm,  Auto Wavelength Recognition (with SLS-50), -70 ~+10dBm (-60~+10dBm@850nm), 
W/mW/μW/nW/pW/dBm/dB(REF), Auto-zeroing, 1000 records storage, 
USB port, PC software, Backlight Display, Rechargeable battery"