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Grandstream WP820
| Type | Portable Wi-Fi Cordless IP Phone |
| Wi-Fi | Dual-band 802.11 a/b/g/n (2.4 GHz & 5 GHz) with roaming support |
| SIP Accounts | 2 SIP accounts |
| Lines | 2 lines |
| Display | 2.4" color LCD (240 × 320) |
| Audio | HD voice, dual-microphone, noise reduction & echo cancellation |
| Bluetooth | Built-in (for headsets + mobile device pairing) |
| Battery | 1500 mAh rechargeable Li-ion | Up to 7.5 hours talk time | Up to 7.5 hours talk time |
| Connectivity | Micro USB charging | 3.5 mm headset jack |
| Security | TLS, SRTP, HTTPS, 802.1x encryption support |