This week, Bone have added a new iPhone case to their collection called the Horn Bike. It’s an eco-friendly silicone amplifier that doesn’t need an external power source. Shock-proof, scratch-proof and washable, it comes equipped with an adjustable velcro strap for you to attach it to your bicycle, and can be set at almost any angle.
The horn speaker helps to channel the sound in one direction, boosting the iPhone’s volume output by 13db, and it doesn’t require any supplementary electricity. Great for anyone who wants to listen to music as they cycle along, or follow directions from their GPS app, the Horn Bike is available for $30.