inputs.text: need speaker mp3transistor radiohandheld police scanner works - several mounting points may may not able use bikesas amplified speaker quite adequate get 15 hours set batteriesi used dozens ridesexcellent able listen music riding makes bike ride less boringand fit hand held police scanner least according dimensions case antenna protruding almost zipped casealso handy carrying pop tooas weatherproofness dont know originally would use plastic trash bag around tie rainednow english style bicycling rain cape rain cape amazon riding cape covers well handlebars eliminated need bag riding rainsthis worthwhile biking accessory decent priceit look little odd thoughanother thing sure secure best possible wont quickly grabbed stolenit uses several velcro strapsa thief could steal quickly bike unattended