| Indoor Range | 50 meters (in ideal conditions) |
| Outdoor Range | 300 meters (in ideal conditions) |
| Battery | 1460 mAh, Lithium-ion, 3.7 V, 5.4 WH/Up to 40-hour of talk time/Up to 575-hour of standby time |
| 1.8” 128 x 160-pixel TFT color display |
| Desktop or wall mountable |
| LCD backlight, key backlight |
| Energy-saving ECO mode/ECO Mode+ |
| Backlit keypad with 25 keys | Standard ITU telephone keypad, 12 keys, 4 x 3, with star and pound/hash key/5 navigation keys (left, right, up, down, OK) /2 softkeys/6 function keys (Speaker, message, Off-hook, Cancel, TRAN, Mute)/3 side keys (volume up/down, alarm)/6 shortcut keys |
| Three LED indicators on W70B | 1 x Registration LED/1 x Network Status LED /1 x Power Indicator LED |
| External Yealink AC adapter | AC 100-240V Input and DC 5V/600mA Output |
| Color | Handset: Black ; Base: Classic Grey |
| Handset size | 157 mm x 51 mm x 24 mm |
| Base station size | 130 mm x 100 mm x 25.1 mm |
| Operating humidity | 10%-95% |
| Handset operating temperature | - 10 to +50°C (+14-122°F) |
| Handset storage temperature | - 30 to +70°C (-22 to 158°F) |
| Base station operating temperature | 0-40°C (+32-104°F) |
