Mitel Cordless (Dect) Spare Replacement Headset Kit, 50006535-B (Use with the Mitel Dect Module) 5330, 5340, 5360 Mitel Phones | Spare Headset and Battery included BUNDLE OF 2 ITEMS: Mitel DECT Replacement Cordless Headset and Battery ON HEADSET FEATURE: Initiate call / end call key ADDITIONAL HEADSET FEATURE: Integrated functionality of the Cordless (DECT) Headset eliminates the need for a handset lifter. TALK TIME: 7 Hours of Talk Time, 43 hours standby time with one charge IMPORTANT NOTE: Headband, Earwrap, Charging Cradle and DECT Module sold separately. Charging Cradle and DECT Module are required for this item to work.