Review on Waterproof Mobile Phone Holder with 4-in-1 Bicycle Light, Rechargeable Bike Headlight with Horn – Enhance Bicycle Safety for Commuting by Jason Graham

The point is that it's a nice all-in-one with a light, buzzer, phone holder and charger. It's a decent size for what it does. I'm coming from a regular call and I'm not used to the buzzer. Most of the sound (change by holding down the button) really annoys me, but I think it does the job. The light is bright enough and the phone holder part is decent. I haven't gone the rough route yet, so I can't confirm. The charging port is a nice touch. In general a good product.