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Motorola KRZR K1

Sony Ericsson K550

Network
Technology	GSM	GSM
2G bands	GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900
GPRS	Class 10	Class 10
EDGE	Class 12	Yes

Launch
Announced	2006, July	2007, February
Status	Discontinued	Discontinued

Body
Dimensions	103 x 42 x 16 mm (4.06 x 1.65 x 0.63 in)	102 x 46 x 14 mm (4.02 x 1.81 x 0.55 in)
Weight	102 g (3.60 oz)	85 g (3.00 oz)
SIM	Mini-SIM	Mini-SIM

Display
Type	TFT, 256K colors	TFD, 256K colors
Size	1.9 inches, 30 x 37 mm, 11.4 cm2 (~26.3% screen-to-body ratio)	1.9 inches, 11.4 cm2 (~24.2% screen-to-body ratio)
Resolution	176 x 220 pixels (~148 ppi density)	176 x 220 pixels (~148 ppi density)
	Second external CSTN, 256K colors display (96 x 80 pixels) Screensavers and wallpapers Downloadable logos	Wallpapers, screensavers

Memory
Card slot	microSD (dedicated slot)	Memory Stick Micro (M2), up to 2 GB
Phonebook	1000 x 20 fields, Photo call	1000 x 20 fields, Photo call
Call records	40 dialed, 40 received, 40 missed calls	30 received, dialed and missed calls
Internal	20MB	77MB

Main Camera
Modules	2 MP	2 MP, AF
Features		LED flash
Video	CIF	QCIF

Selfie Camera
Modules	No	No

Sound
Loudspeaker	Yes	Yes
3.5mm jack	No	No

Comms
WLAN	No	No
Bluetooth	1.2, A2DP	2.0, A2DP
Positioning	No	No
Infrared port	No	Yes
Radio	No	Stereo FM radio, RDS
USB	Proprietary	2.0

Features
Sensors
	MP3/AAC/AAC+ player Predictive text input Organizer Voice memo	MP3/AAC/MP4 player TrackID music recognition Predictive text input Adobe Photoshop Album Organizer Voice memo/dial

Battery
Type	Removable Li-Ion 700 mAh battery (BC50)	Removable Li-Po 950 mAh battery (BST-33)
Stand-by	Up to 300 h	Up to 350 h
Talk time	Up to 6 h	Up to 7 h

Misc
Colors	Cosmic Blue, Silver Sail	Jet Black, Pearl White, Plum Ruby, Sophisticated Silver
SAR		1.37 W/kg (head)     0.87 W/kg (body)
SAR EU		1.25 W/kg (head)
Price	About 110 EUR	About 70 EUR