Instruct: Classify a given review into positive or negative sentiment.
Query: No hassle

I have been a commuter cyclist for decades and I have used a number of different front and rear lights. The Blackburn Mars 3.0 is significantly brighter that any rear light I have yet used. Installation was easy, although I am not fond of plastic/resin "screws" for mounting brackets. My last light, a Cat Eye, worked well for quite some time. The salt air here at the beach eventually corroded the insides, first eliminating the flashing modes, then reducing the steady mode to only occasional function, soon after which the unit died. The Cat Eye had easy snap off access to the battery which may have contributed to its demise. The 3 small screws on the Mars are a small inconvenience if they prevent corrosion.