Screen size
A27 RetinaWinner: 4.3"+44%
K451+ Sound Wave2.4"
Quick verdict
A27 Retina leads the measured specs 9-1.
Measured wins
A27 Retina
9
spec wins
Overall winner
Ties
5
equal specs
K451+ Sound Wave
1
spec wins
Screen size
Technology
A27 Retina
GSM / HSPA
K451+ Sound Wave
GSM
2G bands
A27 Retina
GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
K451+ Sound Wave
GSM 900 / 1800 - SIM 1 & SIM 2
3G bands
A27 Retina
HSDPA 2100
K451+ Sound Wave
-
Speed
A27 Retina
HSPA 7.2/0.384 Mbps
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
equal specsWired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
K451+ Sound Wave
-
GPRS
A27 Retina
-
K451+ Sound Wave
Yes
EDGE
A27 Retina
-
K451+ Sound Wave
No
Announced
A27 Retina
2013, March. Released 2013, March
K451+ Sound Wave
2012
Status
A27 Retina
Discontinued
K451+ Sound Wave
Discontinued
Dimensions
A27 Retina
133.6 x 66 x 9.1 mm (5.26 x 2.60 x 0.36 in)
K451+ Sound Wave
116.5 x 51.9 x 14.6 mm (4.59 x 2.04 x 0.57 in)
Weight
A27 Retina
126.5 g (4.44 oz)
K451+ Sound Wave
-
SIM
A27 Retina
Dual SIM (Mini-SIM)
K451+ Sound Wave
Dual SIM (Mini-SIM)
Type
A27 Retina
IPS LCD
K451+ Sound Wave
TFT, 65K colors
Size
A27 Retina
4.3 inches, 51.0 cm2 (~57.8% screen-to-body ratio)
K451+ Sound Wave
2.4 inches, 17.8 cm2 (~29.5% screen-to-body ratio)
Resolution
A27 Retina
540 x 960 pixels, 16:9 ratio (~256 ppi density)
K451+ Sound Wave
240 x 320 pixels, 4:3 ratio (~167 ppi density)
OS
A27 Retina
Android 4.1 (Jelly Bean)
K451+ Sound Wave
-
CPU
A27 Retina
Dual-core 1.2 GHz
K451+ Sound Wave
-
Card slot
A27 Retina
microSDHC (dedicated slot)
K451+ Sound Wave
microSDHC (dedicated slot)
Internal
A27 Retina
4GB 512MB RAM
K451+ Sound Wave
-
Phonebook
A27 Retina
-
K451+ Sound Wave
500 entries
Call records
A27 Retina
-
K451+ Sound Wave
Yes
Single
A27 Retina
8 MP, AF
K451+ Sound Wave
1.3 MP
Features
A27 Retina
LED flash
K451+ Sound Wave
-
Video
A27 Retina
Yes
K451+ Sound Wave
Yes
Single
A27 Retina
2 MP
K451+ Sound Wave
-
Video
A27 Retina
K451+ Sound Wave
-
Other
A27 Retina
-
K451+ Sound Wave
No
Loudspeaker
A27 Retina
Yes
K451+ Sound Wave
Yes
3.5mm jack
A27 Retina
Yes
K451+ Sound Wave
Yes
WLAN
A27 Retina
Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
K451+ Sound Wave
No
Bluetooth
A27 Retina
Yes
K451+ Sound Wave
2.0
Positioning
A27 Retina
GPS
K451+ Sound Wave
No
NFC
A27 Retina
No
K451+ Sound Wave
No
Radio
A27 Retina
FM radio
K451+ Sound Wave
FM radio, recording
USB
A27 Retina
Proprietary
K451+ Sound Wave
microUSB
Sensors
A27 Retina
Accelerometer
K451+ Sound Wave
Messaging
A27 Retina
-
K451+ Sound Wave
SMS, MMS
Games
A27 Retina
-
K451+ Sound Wave
Yes
Java
A27 Retina
-
K451+ Sound Wave
Yes
Other
A27 Retina
-
K451+ Sound Wave
Audio/video player Photo viewer Organizer
Type
A27 Retina
Li-Ion 1800 mAh battery
K451+ Sound Wave
Li-Ion 1800 mAh battery
Stand-by
A27 Retina
Up to 180 h
K451+ Sound Wave
Up to 500 h
Talk time
A27 Retina
Up to 4 h
K451+ Sound Wave
Up to 8 h
Colors
A27 Retina
Black
K451+ Sound Wave
Silver/Black
SAR EU
A27 Retina
1.00 W/kg (head)
K451+ Sound Wave
0.45 W/kg (head)
Price
A27 Retina
About 160 EUR
K451+ Sound Wave
About 20 EUR