Uniden Single-Line Business Cordless- Uniden single-line business cordless-Interference reaction text: less susceptible to interference than spread spectrum technology since it uses narrow band-900MHz narrow band FM with ADPCM (high quality secured conversation by 32 kbps ADPCM voice codec)-2-Line, 16-digit dot-matrix display plus 3 status icons-Pause/flash/redial/memory/hold/mute-Headset jack- Conference (allows you to add other parties to your call through your PBX)-3 Selectable ring tones (with hi/low settings) and vibrate ringer- Ringer on/off switch on handset-4 Step volume control- HAC regulation compatible-Page/find-Transfer: allows you to transfer calls to another line with one button through your PBX-20# Memory: allows you to store up to 20 phone numbers for quick and easy speed dialing-Compact and lightweight handset for optimum mobility-Belt clip-Easy connection: plugs directly into your PBX analog port-Base unit dimensions: 4.25inW x 2.25inH x 7.25inD (weight: 11.8oz)-Telephone handset dimensions: 2inW x 5.5inH x 1.25inD (without antenna) (weight: 5.2oz with battery)-Includes nickel metal hydride rechargeable battery pack-Charging time: 5-6 hours max. to full charge-Up to 7 hours talk time, 5 days standby time-Black-BATTERY: BT930 (special order)-UNANA9310