How large is Garmin-Asus nuvifone M20 battery life?

, 920 mah battery is considered 57 average for a smartphone of the same category.

Facts about Garmin-Asus nuvifone M20

Brand and Model		Price	Screen Size	Display Technology	Pixel Density	Operating System Version
	Garmin-Asus nuvifone M20	Coming soon	2.8 inch	TFT resistive touchscreen, 65K colors	286 PPI	Microsoft Windows Mobile 6.1 Professional, upgradable to Windows Mobile 6.5