Specifications: Weight and Dimensions Battery lifetime: Up to 10 hours (GPS Mode). Display size: 22x25mm. Display resolution: 144×168. Thickness: 11,5 mm. Weight: 50 grams. Strap length: 230 mm. Location Location: GPS + GLONASS. Location boost: via PC. Sensors Sensors (internal): Indoor Tracker, Compass. Sensors (wireless): Bluetooth