Specifications:Talk/Standby Time:- Up To 13 Hours Talk Time, Up To 50 Hours Standby Time (Savi 8210 & Savi 8220) Up To 7 Hours Talk, Up To 30 Hours Standby (Savi 8240) Unlimited Talk And Standby (Savi more→8245)Headset Wireless Range:- Line Of Sight: 590 Ft/180 M, Typical Office Environment: 180 Ft/55 MBattery Capacity:- 490 Mah (Savi 8210 Office And Uc), 700 Mah (Savi 8220 Office And Uc), 140 Mah (Savi 8240 And Savi 8245 Office And Uc)Battery Type:- Rechargeable, Replaceable, Lithium Ion PolymerCharge Time:- 3 HoursWireless Technology:- Dect 6.0 (Savi 8200 Uc Series) And Bluetooth V4.2 (Savi 8200 Office Series) - Na OnlyAudio Profiles:- Advanced Audio Distribution Profile (A2dp), Avrcp, Bluetooth …