 Holux M-241 Bluetooth GPS Receiver + Data Logger (1xAA Battery/MTK Chipset/130,000 Waypoints) $80.33 |  Altimeter/Barometer Compass/Weather Thermometer $24.91 |  Military Style Brunton Classic Lensatic Compass $4.87 |  Mini Portable Bluetooth GPS Travel Recorder/Data Logger (100,000 Waypoints) $56.90 |  Handheld Dual Band GSM + GPS Remote Personal Position Tracker $100.59 |