Key Specifications Unit dimensions: (W x H x D): 5.2 x 9.9 x 2.6 cm Display size: 2.3 x 2.3 cm Display resolution: (W x H): 128 x 128 pixels Display type: Sunlight-visible, monochrome, transflective memory-in-pixel (MIP) Weight: 100 g Battery type: Rechargeable internal lithium ion Battery life: Up to 50 hours at 10-minute tracking with 5-minute logging (default) Up to 30 hours at 10-minute tracking with 1-second logging Up to 20 days at the 30-minute interval power saving mode Up to 1 year when powered off Wireless Bluetooth?, ANT+? Water rating: IPX73 Interface: Micro USB Waypoints: 500 Routes: 20 Gift box dimensions: (WxHxD): 12.0 x 13.1 x 5.3 cm Gift box weight: 294.8 g