- Additional Handset- 4-Line Operation- Speakerphone- Shock Resistance- Full Dot Monochrome LCD Display- 99 Number Redial Memory- Rechargeable Ni-MH Battery- Up to 7 hours Talktime- Up to 7 days Standby Time- 14 hours Charge Time- 8-Step Speakerphone Volume Control- 8-Step Ringer Volume Control- 12 dB Volume Range- Hold- Mute- Flash- Belt Clip- Wall Mountable- Headset Jack- Multiple Language Support (English / French / Portuguese / Spanish)- Not Stand Alone Item: Must Pair w/ KX-TGW420B