Unlike many smartphones, the Garmin Asus Nüvifone M10 doesn't have an FM radio. The Windows Media Player is augmented by a second player but it needs music to be stored in a file called My Music on a microSD card or in handset memory before it'll recognise it.
It doesn't offer any more features than Windows Media Player, though, which can recognise music file stored anywhere, so you can muddle through with that if you're disorganised about storage.
The 3.5mm headset connector at the top of the chassis is welcome and music quality is acceptable through the provided flat in-ear headphones. It is a pity they're a one-piece set, though.
A two-piecer would have allowed us to substitute a better quality headset and still retain the handsfree kit on the provided headset.
Video playback support runs to MP4, WMV and the H.264 and H.263 codecs. We watched video trailers with ease, though colour rendition on the screen is not as vibrant as we'd have liked.
Garmin says the battery will give you up to eight hours of talk time. We found it lasted well during ordinary phone use, and even stood up fairly well when we had both the GPS and Wi-Fi running.
If you are going to use the Garmin Asus Nüvifone M10 for navigation when in your car you'll probably have it plugged in to power, and with no walking modes on offer by default you aren't likely to need the GPS a great deal away from a power supply.
With that in mind we'd say getting a full day's life out of the battery is probably not going to be a problem, but you will be advised to administer a daily charge. Nothing new there, then.