Check the listing for details. Yealink WH66-MONO-UC DECT Wireless Headset WH66 MONO. Color: Black, Condition: New. Listed at 247.95 USD. Brand New Sealed in Manufacturer's Packaging Yealink Mono DECT Wireless Headset WH66-MONO-UC This Headset ships Same Day if purchased by 4pm CST M-F Use this office headset to make sure customers and clients have their questions answered. The wireless headset supports busylight and even offers a space to charge up mobile phones as you converse.4" capacitive touch screen features 480 x 800 resolution.Speakerphone function to let the whole team in on the conversation.Features a wireless charger for mobile phones.Yealink Acoustic Shield Technology helps protect against acoustic injury.Office phone headset with a 2-port USB 3.0 hub.Supports busylight.Backed by the manufacturer's 1-year limited warranty.Black for a simple, professional look.