The efficient Mitel 50005712 Cordless Headset & Module Bundle (NA DECT) is for use on 5330/5330e/5340/5340e/5360 IP Phones. This has Initiate call/end call, volume control and mute keys. 

Features: 

• Place outgoing calls while remaining mobile with progof rammable "auto speed dial"
• 8 hours talk time
• 43 hours standby time
• Operating range up to 300 feet in a typical office environment
• A warning tone will alarm when out of range
• LED indicators will indicate connectivity or charging status
• Supports up to two cordless devices

• 50005521 Cordless Accessories Module (NA DECT)
• 50005522 Cordless Headset w/Charging Cradle (NA DECT)

• 3300 ICP, Release 8.0, UR1
• SX-200 ICP, Release 4.0 (UR3)
• Not Supported on SIP Phones