With its largehigh-resolution TFT color display(8,9 cm (3.5 inch), 320 x 240 pixels) the snom 821 offers a brilliant depiction of call lists, phone directories, and caller information via the integrated XML browser.
The wideband technology used in the handset captures more than double the frequency spectrum that a standard handset does, making the audio quality comparable to FM radio. On speakerphone a Class D amplifier reliably suppresses interference noise.