Garmin Edge 500. Form factor: Fixed. Display resolution: 128 x 160 pixels, Display size (HxV): 29.7 x 36.6 mm (1.17 x 1.44 "). Weight: 56.7 g, Width: 48 mm, Depth: 22 mm. Battery technology: Lithium-Ion (Li-Ion), Battery life (max): 18 h