Insize wireless digital caliper. It's having following features. Built-in wireless data transfer module, Zigbee signal. Data tranfer distance is 6 meter. Buttons: on/off, zero, mm/inch, data transmission. Auotmatic power off, move the digital unit to turn the power. Made of stainless steel. Model 1113-150, 1113-200, 1113-300 Please contact us for more information.