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Dimensions
Size comparison
Echo Show 21A15 W
| Echo Show 21 | A15 W | Difference | |
|---|---|---|---|
| Height | 340 mm | 206 mm | +134 mm |
| Width | 540 mm | 286 mm | +254 mm |
| Depth | 38 mm | 137 mm | −99 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is Echo Show 21 better than A15 W?
Echo Show 21 has no measurable advantages in this pair.
Why is A15 W better than Echo Show 21?
A15 W has no measurable advantages in this pair.
Specifications
Side by side
| Sound | ||
| Lowest frequency | — | 45 Hz |
| Highest frequency | — | 22,000 Hz |
| Battery & charging | ||
| Battery life | — | 19 h |
| Mains powered | Yes | No |
| Battery powered (portable) | No | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | — | 4.2 |
| Bluetooth codecs | — | SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | — | No |
| aptX | — | No |
| LDAC | — | No |
| 3.5 mm jack / AUX | — | Yes |
| Smart & streaming | ||
| Wi-Fi | Yes | Yes |
| AirPlay | — | Yes |
| Chromecast / Google Cast | — | Yes |
| Spotify Connect | — | Yes |
| Multiroom | — | Yes |
| Voice assistant | Alexa | — |
| Voice assistant built in | Yes | Yes |
| Screen | Yes | — |
| Companion app | — | Yes |
| Design & build | ||
| Width | 540 mm | 286 mm |
| Height | 340 mm | 206 mm |
| Depth | 38 mm | 137 mm |
| Protection rating | — | IPX2 |
| Water resistance (IPx) | — | IPx2 |
| Colours | Black | — |
