The Yealink W73H is the new-generation of stylish modern wireless handset designed for business use with a new ID design, which is more sleek, convenient to carry, and has better battery life and communication qualityCombining the benefits of wireless communication with rich business features of Voice-over-IP telephony, it empowers users with convenient wireless communication, excellent speech quality, and encrypted call information by the reliable DECT encryption technology. Its graphical color display will provide you with a comfortable and joyful user experience for the all-day work.The W73H is perfectly compatible with Yealink W70B. The W73P system can support 10 handsets, 10 SIP accounts, and 20 simultaneous calls (2 calls per handset).The W73H will be perfectly compatible with the W90 multi- cell system, providing you with more options for your office expansion.