Laser Distance Meter • Response time: 0.5 seconds ■ Lasrer type: wave length 635 nm, class 2, total power<1 mW ■Measuring Function: Distance/Area/volume/Continuous/lndirect ■3 Measurement Reference: Front / Rear / Extend ■Horizontal indicate: Bubble ■3 Measurement Units: m /ft/ft+inch ■Measurement value Operations: Plus / Minus ■Historical data storage: 20 sets ■Laser auto off time 0.5 minutes ■The Meter auto power off time 3 minutes ► Power: 1.5V battery size AAA 2 pieces ■ Battery life: 5000 measurements approx. ■Weight: approx 120g (include battery) ■ Storage condition: Temperature -10~60 C ■Tripod supported The Meter compliance with standard EN61000-6-3:2001+A11: 2004, More information online at www.mastech.com.cn