Yealink W78H DECT Handset • New modern commercial design, more compact and easy to carry • 6,1 cm ( 2,4 inch ) 240 x 320 TFT color screen with intuitive user interface • Up to 21 hours talk time (in ideal conditions) • Up to 166 hours standby time ( in ideal conditions) • Quick charging: 10-min charge time for 2-hour talk time • HD voice and noise cancellation • Headset connection via Bluetooth or 3.5 mm jack • Vibration alarm gurantee you not to miss any call even in noisy situations • Sturdy and reliable belt clip to move • Flexibly meet demands in either single-cell or multi-cell solutions