<br>Men's Bluetooth Beanie Hat Cap Teen Boys Bluetooth Wireless Warm Beanie Hat Handsfree Music Cap Headphone Headset Christmas Gift Hands Free Talking for Women Men <br>🌻1.Keeps the head warm, while staying connected with the phone on the go <br>🌻2.Integrates a tiny convert microphone <br>🌻3.Hidden stereo speakers and microphone <br>🌻4.Syncs with smartphones via Bluetooth <br>🌻5.Charge via USB <br>🌻6.Fully washable (remove speakers from their pouches) <br>🌻7.One size fits most <br>🌻 <br>🌻Bluetooth specification: V4.2 <br>🌻 <br>🌻1.Frequency range: 2.4026GHz-2.480GHz <br>🌻2.Transmission distance: 10-15 meters <br>🌻3.Channel: Stereo <br>🌻4.Speaker parameters: 24 ohms / 30mm <br>🌻5.Speaker power: 10 mWX2 <br>🌻6.Signal to noise ratio: 102dB <br>🌻7.Function: previous song, next song, volume plus, volume reduction, play, pause, answer the call, make a call, microphone intercom <br>🌻8.Play time: 6 hours (100 volume playback) <br>🌻9.Talk time: 7 hours or more <br>🌻10.Standby time: 150 hours or more <br>🌻11.Charging time: 1 hour or so