Windows ce ang os ng growl, which makes it able to run Garmin software. Free din ang map updates sa growl, punta ka lang sa kanila. Di pa ko nagtry pa-upgrade ng map, maybe this month kung sipagin. What i do not like is that the default language is chinese. Pag di mo na set ng maayos ang gps then you open it and it will be in chinese. Manghuhula ka ngayon anong icon ang dapat mo pindutin to get to the set up utility so you can set the language to english.

What i read before about avt e hirap sila looking for maps updates. Not sure about now baka nagbago na. Chinese din yata origin nito so expect chinese to be the default language also.

Ok naman ang growl, it can read even the worst pirated dvd. The only complaint is the usb, pag malaki ang usb like 8gig matagal siya magbasa. Need mo din ng good quality usb, pero that is a given naman na kasi bakit ka bibili ng class 6 kung konti lang difference sa class 10. Yung sd card reader nya ok naman, kahit 16gig kayang basahin. Di ko pa na-try sa 32gig sd card so yun wala ako alam. Yung ipod/iphone connection nya nasa loob ng glove box, same as aux in. Some like it that way since nakatago, me i don't care since i do not use apple products. My samsung phone connects to the usb.

Radio is as good as any radio.

Sound quality, well presets lang ang adjustments - rock, classical, jazz, pop then bass and trebel, and loud (more bass). Ok naman, lalo na pag nagpalit ka ng speakers. Pero don't go looking for something like sound quality ng pioneer, growl is a china product and we get what we pay for.

Touch screen is easy, sensitive enough for a car hu. Hindi siya ipad or galaxy note kaya wag ka maghanap ng ganun ka responsive na touch screen. And it is lcd, not led. Good contrast even in broad daylight and lightly tinted windows.

Back up camera is very good even at night, and di nasisilaw ng headlights ng kotse sa likod.

Wala siyang back-up battery/capacitor for the memory, so pag na-disconnect ang battery ng car (during pms, for example) e burado lahat ng settings mo.