Yealink Phone Compatible Wireless Headset | Yealink SIP Phones: T48G, T46G, T42G, T41P, T38G, T28P, T26P | Yealink Wireless EHS Headset Adapter | Jabra PRO 920 Bundle with Bonus Premium Ear Cushions YEALINK COMPATIBLE BUNDLE:  Yealink Wireless Headset Adapter,  Wireless Headset,  Wireless Base Unit,  AC Power and  Cables TALK TIME:  Up to 8 hours, RANGE: Up to 325 ft COMPATIBLE YEALINK SIP PHONES:  T48G, T46G, T42G, T41P, T38G, T28P, T26P WEARING STYLE HEADSET: Headband included (earhook accessory is optional) Yealink Compatibility: This item is guaranteed to be compatible with the Yealink SIP phones mentioned in the Description section. Additionally, our friend Virginia-based specialist are here to help you if you have tech support needs. You won't get that type of service from other large big box retailers.