Can be connected to Erbauer Laser app via Bluetooth. Allows uploading of measurement overlays to images and floor plans. Features Disto M3i technology by Leica Geosystems for high accuracy of ±1.5mm per m. 8 functions, including area , volume, pythagoras and angle calculation. Easy to read, colour LCD with backlighting. Auto-off function to save battery power. Can be adjusted to begin measurement from back, middle or front of the device. IP54 water-resistant, suitable for use in wet and dusty environments. Memory saves the last 15 measurements. Working Range: 0-30m Accurate to 1.5mm/m Calculates Distance, Area, Volume & Pythagoras Function Laser Class 2 Works with iPhone, iPad, Android & Bluetooth 4.0 IP54: Indoor & Outdoor Use Auto Power Off in 90 Seconds Working Range: 0-30m Accurate to 1.5mm/m Calculates Distance, Area, Volume & Pythagoras Function Laser Class 2 Works with iPhone, iPad, Android & Bluetooth 4.0 IP54: Indoor & Outdoor Use Auto Power Off in 90 Seconds