Challenger 1.0, Guardian 1.0 & Executive 1.0, the differences. 

Name:

Challenger 1.0

Guardian 1.0

Executive 1.0

Frequency band:

Triband 

Quadband

Quadband

Technology:

GSM

GSM

GSM / 3G

WWAN:

No

No

Yes

Bluetooth:

Yes

Yes

Yes

GPS:

No

Yes

Yes

SMS:

Yes

Yes

Yes

MMS:

No 

Yes

Yes

GPRS:

No

Yes

Yes

Dual Sim:

No

Yes

No

PMR (UHF):

No

Yes

No

Weight:

142gr

189gr

215gr

USB:

Micro USB

Micro USB

Micro USB

Display:

2.0 TFT 262k colour

2.2 LCM/QVGA/Touch

3.2" TFT/ Touch

Camera:

No

2.0 MP

3.2 MP

Colour:

Yellow/black

Yellow/black

Black 

Stand by time: 

Up to 450h

Up to 800h

Up to 200h

Talking time:

Up to 5h

Up to 10h

Up to 6h 

Charging time:

2h

3h

3h

IP Protection:

IP54

IP57

IP65

Drop test:

2m on concrete

2m on concrete

2m on concrete

Operation temp:

-20 to 55C

-20 to 55C

 -20 to 40C 

Torch:

Yes

Yes

No

Laser Pointer:

Yes

No

No

FM Radio:

Yes

Yes

Yes

Int Storage:

8MB / 32MB

2GB

512MB

Ext Storage:

16GB MicroSD

8GB MicroSD

up to 32GB

Java:

No

Java 2.0

Yes

WAP:

Yes

Yes

No

Sync Outlook:

No

Yes

Yes

Software:

No 

No

Windows Mobile 6.5 P

Battery Capacity:

1300mAh

1800mAh

1300/2600mAh