Grandstream WP820 provides reliable VoIP connectivity using SIP with the convenience of a WiFi phone. Featuring built-in dual-band 802.11a/b/g/n WiFi, WP820 allows the user to wander as far as the wireless network will take them. WP820 runs Android 7.0, which gives you broad access to Google apps.
Grandstream WP820 gives you the professional VoIP experience you expect from Grandstream, including HD audio, Opus audio codec support, and echo cancellation. 7.5 hours of talk time and 150 hours of standby time mean WP800 works for all-day use