M-241: Holux M-241 Bluetooth Data Logger GPS (Runs on AA Battery, MTK Chipset, 130,000 Waypoints) The Holux M 241 Bluetooth GPS logger provides real time coordinate logging and easy-to-use trip guiding service. Holux M-241 is capable to record up to 120,000 records positions, including longitude, latitude, UTC, and height data. Besides the logger function, you are also able to enjoy a brand new experience in driving with BluetoothTM 51 parallel satellite-searching channels for fast acquisition and reacquisition LCD display ( 32 x 8.9mm/128 x 32 pixels) to show position information, speed, capable logging memory size