It has a small hole, the headphone cap can be taken off so that you can wash the hat.
Original Colorful professional Metal HIFI Waterproof Monitor Headphone Earphone
Super Clear Bass Stereo 3.5 mm
Noise Cancelling Earphones Jogging/Sport Comfortable Wearing Headphone
Portable With/Without Microphone
Voice Control Bluetooth 4.0
Wireless Handsfree Mobile Music Earphone High-Quality Neckband Common Headphones for PC For All SmartPhones for Xiaomi Sungsum for iPhone Computer MP3/4 Player, for Xiaomi mi band 2, headphones for a mobile phone, -compatible speaker, TV
Feature:-Support Bluetooth-compatible Communication And Bluetooth-compatible
Music-Low Loss High-Quality Stereo
Sound-Built-in Lithium-ion Battery With Micro USB Charging Function,charge via USB Cable, long stand-by time
LED Display For Working Status
Use Friendly Function Design-Knitted material, fashion and keep warm with answer the phone in winter.-Set-in MIC, available for cell phone to transmit the speaking phone to your audio devices directly so that the user can hand free answering phone up via the device.
Support display receiver battery on iPhone.
Specification:
Transmission distance: 10M
Charging time: 2H
Bluetooth-compatible talk time: 6-8H
Power/Handfree/Stop/PlayVol Up/NextVol Down/Previous