There are two top sellers BT GPS receivers, AR-200 and GlobalTop G33. Both have almost the same parameters except $20 price difference. Are there indeed any difference? which one deserves to buy?

 Hi, both are using the same MTK 51 channel chipset but G33 is capable of GPS update of 5 times per second (5hz) vs. 1hz on the AR-200. Higher update frequency means higher accuracy especially when you are moving at a higher speed. NOTE: Not all navigation software will accept or compatible with 5hz update, only select software such as the Car Racing program from MaxQData.com is one example.

If you are trying to use it for with most other navigation software, the 1hz on AR-200 is more than enough. The price on the AR-200 at $19.95 is actually a limited time offer only and we will end the promotion soon. By then, the price will be around $29.95.

 The CHIP is capable of 5Hz operation.  Generally all it takes is a setup command to enable 5Hz.  Can this be done on the AR-200, or is it locked in to 1Hz?

 No, the AR-200 does not support 5hz.

 Does teh AR-200 also have auto poewr feature?

 Hi, no, the AR-200 does not have auto power On or Off, the same goes for G33.

If you are looking for auto power on or off feature, please check out iBlue 737A+ here:

http://www.buygpsnow.com/i-Blue-737A-plus_Bluetooth_GPS_Receiver.aspx