The Edge 830 does more than collect data: it provides dynamic performance information that will help you. to beat all your brands. Allows follow-up and group messages, so you can stay in touch when you leave the group. It is compatible with the Steps system of Shimano for Ebikes. Allows linking with Varia. Dimensions: 50.0 x 82.0 x 20.0 mm. Screen resolution: 246 x 322 pixels. Rechargeable lithium battery. IPX7. Autonomy of the battery / battery (up to 20 in training mode) 200 waypoint. Up to 100 routes. 16 Gb internal memory. Approximate weight of 75.8 g.