Yealink W78H

• New modern commercial design, more compact and easy to carry 
• 2.4" 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 freely 
• Flexibly meet demands in either single-cell or multi-cell solutions

Voice Features:

• Full-duplex speakerphone 
• HD audio 
• Hearing Aid Compatibility (HAC) compliant 
• Frequency response—100 Hz–7 kHz 
• FNR (Flexible Noise Reduction)/Noise Cancellation 
• Receiver volume control: 5 steps 
• Ringer volume control: 5 steps+off 
• 9 ringer melodies 
• Multiple advisory tones 
• Acoustic warning for low battery status 
• DTMF

DECT:

• Frequency bands: 1880 – 1900 MHz (Europe), 1920 – 1930 MHz (US)
• DECT Range: Up to 50 meters indoor (in ideal conditions)/Up to 300 meters outdoor (in ideal conditions) 

• DECT Standards: CAT-iq2.0

Display: 

• 1.8’’ 128x160 TFT color screen 
• Intuitive user interface with icons and soft keys 
• Caller ID with name and number 
• Notification Light: voice mail, missed call 
• Date & time (manual/auto synchronization) 
• Screen saver 
• Multilingual user interface 
• Keypad backlight

Phone Features: 

• Up to 2 simultaneous calls per handset 
• Handset select for receiving call 
• Handset and Number select for making call 
• Auto intercom, auto answer 
• 3-way conference
• Call forward: Always/Busy/No Answer 
• DND 
• Call waiting, mute, hold 
• Call transfer 
• Swap between calls 
• Redial 
• Speed dial 
• Voice mail 
• Silence 
• Dial plan: Replace Rule/Area Code/Block Out 
• Keypad lock, emergency call 
• 100 phone book memory (store in the base) 
• Remote phonebook, LDAP, XML phonebook 
• Phonebook search, block list 
• Call history: All/Placed/Missed/Received (up to 100 entries) 
• Direct IP call without SIP proxy 
• Reset to factory, reboot 
• Anonymous call, Anonymous call rejection 
• OTA (Over-The-Air) upgrade

Physical Features: 

• Handset Size:151.0 mm x 49.5 mm x 21 mm 
• Handset Weight: 98g 
• Color: Space Gray 
• Battery: 1010 mAh, Lithium-ion, 3.7 V, 3.73 WH/Up to 21 hours of talk time (in ideal condtions)/Up to 166 hours of standby time (in ideal coditions) 
• Headset jack (3.5 mm) 
• Charger: DC 5V/0.6A Output 
• Power Adapter: - Input: 100-240 V ~ 50/60 Hz, 0.2 A - Output: 5 V, 0.6 A 
• Backlit keypad with 25 keys: Standard ITU telephone keypad, 12 keys, 4x3, with star and pound key/5 navigation keys (left, right, up, down, OK)/2 softkeys/6 function keys (Speaker, message, Off-hook, Cancel, TRAN, Mute)/6 shortcut keys 
• Operating humidity: 10 ~ 95% 
• Operating temperature: -10 ~ +50°C (+14~122°F) 
• Storage temperature: -30 ~ 70°C (-22 ~ 158°F)