Candybar cell phone display sometime do not comport if we use to browse the internet.we have to scroll the key to the left or right to fit the browser page.but Sony Ericsson K660i comes to fix this problem although Sony Ericsson K660i still use the candybar display but you will comport when you brows the internet the display will change to horizontal so so you will comport without have to scroll.for the internet application Sony Ericsson K660i has many features such as HSDPA, RSS Feeds, TrackID, and Google Maps.

Design
The design of Sony Ericsson K660i is stylish with black color and nice keypad.the body is ergonomic design so you will comport when you hold in your hand.
Screen Display
The screen display using 2 inches and 262 K.and the screen clear enough when we use in outdoor.
Audio
Sony Ericsson K660i has a complete audio format and also has integrated with MP3 player and FM radio but you don’t expect the great sound from Sony Ericsson K660i because this is not the walkman series so the sound is usual.to listen the MP3 and FM radio you can use the speaker on the back body.but do not available the FM radio recorder.
Camera
As HSDPA cell phone Sony Ericsson K660i has integrated with 2 camera.the main camera with 2 MP and the 2nd camera using CIF that can use to make video call.Camera is also has integrated with 4x digital zoom but without flash.so when you take an image at night the result very disappointed.
Internet
Sony Ericsson K660i using Netfront browser and WAP 2.0 XHTML.browseing the internet is comport with horizontal display and has integrated with HSDPA, RSS Feeds, TrackID, and Google Maps.
Connectivity
There is 2 options available to connect with other device bluetooth and USB.bluetooth setting is simple and fast to transfer a MP3 file with size 3mb only need 50 second.
Battery
Sony Ericsson K660i using li-ion battery 950 mAh that produce 9 hours talk times and 330 hours standby times.
Multimedia facilities of K660i is complete From the camera, the internet, the connection bluetooth, to the email service.The touch of the stylish design but stayed ergonomic .The support facilities like games 3D and the location service used Google Maps also special added value although being not built-in the GPS module.