- Measures distance from 1.5ft to 60ft- Calculation functions: area、 volume、 addition、 subtraction- +/- 0.5 ~ 1% Accuracy- 0.5in Resolution- LCD display with Backlight- Foot/Meter modes- Built-in Guiding Laser Pointer <br />- Measures distance from 1.5ft to 60ft- Calculation functions: area、 volume、 addition、 subtraction- +/- 0.5 ~ 1% Accuracy- 0.5in Resolution- LCD display with Backlight- Foot/Meter modes- Built-in Guiding Laser Pointer                                                                                                                                Power: 1x 9V?battery (sold separately)Frequency: 40kHz Ultrasonic pickupWorking temperature: 0'C ~ 45'CRange: 0.4m ~ 18m.?Dimensions: 6.1 in x 2.83 in x 1.89 in<br />Weight: 5.71 oz