inputs.text: useful no problehem machine - bought 2008 used rarely last couple years since outdoor sports every day useful fairly accurate thermometer today code red uv alert 3132c uv index 9 fact noon read device 10 no spf protection sunscreen timer indicated exposure 23 minutes since ride bike used spf30 exposure 11 hours tested uv readings increased matter minutes 915 940 index 4 8 different areas along riding path happy no complains indeed power button would handy actually use watch abandoned wrist watch sports uv reading procedure power hungry not whether like one model owning uv reader sports outdoor critically important present times uvb uva real dangers people overlook