Length of slit:      

5mm ～ 11mm (stepless)

Minimum width of slit：

0.2mm

Working distance:      

12 ～ 32mm

Light source:

LED ( 3v/1w, 20,000 hours working life )

Power supply：

AA alkaline batteries x 2 (more than 3 hrs working life)

Net weight:

150g（without batteries）

Guarantee:

1 Year