Features:

Dual-band Wi-Fi: Integrated 802.11 a/b/g/n/ac Wi-Fi supports both 2.4GHz and 5GHz networks for flexible wireless installation.

HD audio: A High-Definition (HD) speaker on the handset provides crystal-clear call quality.

Audio codec: It supports the full-band Opus voice codec and includes an advanced jitter-resilience algorithm, allowing for good voice quality even with up to 30% packet loss.

3-way conferencing: Supports 3-way audio conferencing.

Connectivity: Features an auto-negotiation 10/100 Mbps Ethernet port. The "W" designation indicates it is a wireless version, and the standard version (GHP621) uses Power over Ethernet (PoE).

Power options: The GHP621W is powered by a universal power adapter.

USB charging: A USB Type-C port on the side can be used for charging external devices like smartphones (up to 500mA).

Placement: Can be installed on a desktop or mounted on a wall.

Design: It features a sleek and compact design with an antimicrobial casing.