... 4.best gift Mini 3.5MM Portable Metal wireless outdoor speaker stereo bike speaker speaker for bike , bicycleWeight145GSize37* ... as peripheral speaker. Accessories: application *Sport life:Badminton,Table tennis,Tennis,Billiards,yoga,Fitness,Gravity training,Jog and so ... Read,Cleaning,doing house work,cooking,meditation,sleep/bathe *Outdoor life: camp,barbecue,climb mountain,out door yoga,canyoning ...