Features
1) Perfect for realtors, builders, and anyone who needs a measurement or room's length,area or volume quickly
2) With laser point
3) Measure Range: 0.35 - 18.288m (1.0-60ft)
4) Feet/meter unit choose switch
5) Display: LCD; LCD with backlight
6) Three memories:can preserve measure data
7) Area and volume calculation
8) Addition and subtraction functions
9) Memory clear function
10) Error confirmation 
11) Automatic power off
12) Certificate:Certified by CE
13) Harmonization system (HS) code: 90151000
 
Specifications
1) Power: Alkaline battery 23A 9V
2) Accuracy: +/-0.5% at 77°F(8~60ft)
3) Sensor Working Frequency 40kHz
4) Working Temperature :0°Cto 43°C
5) Ultrasonic  Sensor Wave Length: 650nm
6) Output Power: < 1mw
7) Weight:109g
8) Color: Yellow
9) Size: 15.5 x7.1 x 4.7cm (L x W x H)

Package Contents
1 x Ultrasonic distance meter
1 x Instruction Manual