The Altina GPS Mouse Receiver-GGM308 enables you to receive GPS data on Smart Phone, Pocket PC, and Notebook with wires. GGM308 Receiver provides high position accuracy and has reliable tracking capabilities. The device can provide you an easy way to find out the correct direction you need to go. By compatible dual-channel through RS-232 or TTL, It communicates with other electronic utilities without problem. Meanwhile, it saves critical satellite data by built-in backup memory, and the battery is recharging during normal operation. Moreover, water proof design makes the device can be placed on the car roof even in the raining day.PRODUCT FEATURES:Built-in SiRF Star II / Low Power high performance chipset;Tracks up to 12 satellites at a time;Optional communication level: RS-232 and TTL;Hardware interface: PS2 and USB connectors are available;Built-in WAAS/EGNOS Demodulator;Precise position accuracy: DGPS capability corrects position within 1-5 meters;Water proof design;Easy to use without any Initialization.