The Hazet SmartTAC Torque Wrenches are high-precision measuring instruments with a direct connection to smartphones or tablets via Bluetooth or Wi-Fi. These torque wrenches are designed for screw connections that demand high accuracy, with a minimum tolerance of +/- 1 percent. An smartphone app and low-energy Bluetooth interface allows live data exchange with a smartphone or tablet. The wrenches can also be connected via USB-C interface with a laptop or PC, allowing the wrench to be programmed directly, and saved screwing data can be transmitted to the PC for documentation purposes.