Integrated Bluetooth® connects with iOS devices to transmit readings for remote viewing. Works with free Apple app to display large easy-to-read values up to 30ft (10m) away. Measures up to 229ft (70m) with a target plate. Automatically calculates Area and Volume. Indirect measurement using Pythagorean Theorem. Continuous measurement function with Min/Max distance tracking updates every 5 seconds. Displays Sum (+) / Difference (-) of multiple readings. Front or rear edge reference & built-in bubble level. Historical Storage recalls the previous 20 records (measured or calculated results). Low battery indicator and Auto power off. Tripod mount. Complete with carrying case and 2 AA batteries.