The Kickr I is a 1.5 W and kickr II is 3.0 W ,portable solar charger that can be taken literally anywhere. This compact unit comes with a variety of hooks and buckles so you can attach you Kickr I to nearly anything. Whether a backpack, a tent, or a mountain bike, know you can take your Kickr I anywhere you go. A small pouch is located on the back of the unit so you can securely hold whatever you are charging. Use the Kickr I to charge an intermediary battery and then when the sun isn't at your disposal, use that battery to charge your cell phone, camera, GPS, and more. The Kickr I also comes in a variety of colors so you can pick the right color to match your personality.