- OnCourse Bluetooth GPS receiver is powered by SiRF Star III chipset, with 20-channel satellites, faster time to first fix (TTFF). - Using the latest SiRF StarIII firmware version 3.1.1 which has WAAS/EGNOS enabled out of the box for improve GPS position accuracy. - Static Navigation turned OFF to improve and offer better real time accuracy and usability for Geocaching and navigation in walking mode. - Auto power off in 10 minutes if you turn off your PDA. This feature helps conserve battery life of the GPS receiver. - SiRF star III chipset delivers high sensitivity for greater availability in far more environments, and provides superior location performance, both indoors and out. - It communicates with Host platform (PDA, Laptop...) Via Bluetooth Serial Port Profile. - A replaceable battery with larger capacity (1700mAh) enables the OnCourse Bluetooth GPS to run for up to 17 hours. - A sliding battery lid makes it more user-friendly. With its tiny and delicate look, the OnCourse Bluetooth GPS is definitely your best choice! - 3 LEDs showing the status of rechargeable Li-ion battery, GPS status and Bluetooth status. - Bluetooth operation range:10 Meters. 1-Year Warranty (Parts and Labor) We will repair or replace free of charge any part or parts of the product , if the defect is due to the fault material or workmanship. Warranty involves repairing of defective product/parts and does not entitle purchaser for the replacement of complete product.