Jowoom Smart Tuner T2, Automatic Tuner / Motorised String Crank, For fast and precise tuning & stringing, LCD screen, Suitable for instruments with guitar-like tuners, oods for Acoustic, Classical, Electric Guitar & Ukuleles, Chromatic vocal mode for other instruments, 3 Tuning Modes: Auto, Semi Auto (Manual Strings) and Custom (for Alternative Tunings), The Twin Sensing technology reduces the error rate and enables continuous operation, Rechargeable via USB, Dimensions: (W x D x H): 36 x 97 x 110 mm, Weight: 212 g