Upgraded Unisex Knit Bluetooth Beanie Winter Music Hat Headphones V4.2 w/Built-in Stereo Speaker Unique Christmas Tech Gag Gifts for Boyfriend/Him/Men/Teen Boys/Stocking Stuffers Best Friend Birthday

【Longest Working Time in the Market】: Bluetooth hat with built in 300mAh rechargeable Li-Ion battery can work continuously about 8 hours’ talking time and 6 hours’ playing time while other brands have 120mAh and 1-2 hours playing time only.Romantic gag gifts for him,adults,gifts for teenage boys.