Model: W73P
The handset's Li-ion battery offers up to 21 hours of talk time and a quick top up is easily achieved with 10 minutes of charging providing up to 2 hours of talk time.
The W73H can be paired with Yealink W70B base-station, creating the W73P system which can support 10 handsets, 10 SIP accounts, and 20 simultaneous calls (2 calls per handset). Also, the W78H is perfectly compatible with the W80/W90 multi-cell system.