1) Power Source: 2X AAA batteries 2) Light Source: white LED, rated for 100,000 hours 3) Weight: 0.35 Kg ... .Specification:Model list: FMS CL-400Power Source: 2XAAA batteriesLight Source: White LED, rated for 100,000 hoursWeight: 0.35 KgSize: 190mm/7 ... view of core condition and cleanliness. The light from the white LED hits the end-face at an angle, making the core ...