Denalis are very good but I feel they are rather overpriced for a CBR300. I used BikeVis on my Honda Deauville. They are excellent and not too expensive. The ones I got off eBay cost about £10 and are rated at 10watts. At that price I can replace often should they fail. They have been on about 2 years.I mounted a pair of Denali day-time running lights on my front forks. They have both low and high power capabilities, so I wired them off my headlamp wiring... they work as high and low beams along with my headlamp. I really like the quality and function... but they're pricey. I have a link to their site only to give you an idea what's available for your bike. You can plug in your bike's year and model to see everything available if you like. Good Luck. Stay Safe.
DRL Visibility Lighting Kit with Fender Mount - White or Amber – DENALI Electronics