The The PROLITE-17 pocket-sized optical power meter has compact structure and stable performance. It ensures high measuring precision of 850 nm, 1300 nm, 1310 nm, 1490 nm, 1550 nm and 1625 nm wavelengths. The PROLITE17 weights only 70 g, fits in your hand and lasts up to 80 hours without changing the batteries. It is ideal to be carried out at any time.