This hat is comfortable and the sound is excellent with V3.0 + EDR Bluetooth version.
If you are active and listen to music while walking, hiking, fishing, canoeing -- anywhere that an earphone cord might get tangled or in the way, then this integrated cap and earphones is for you. This hat comes with only what you see, the bluetooth controller and earphones sewed into the cap. The controller sits in a small pocket on the side where the stitched button symbols are. There are no extra earbud tips, but a short USB charging cord is included.

Features:
Perfect for long walks, these had the earbuds built in and the control buttons on the side.
Set-in MIC is available for cell phone to transmit the voice to your audio device in the hat directly. Pair the Bluetooth, then you can answer the phone calls through the hat.
With 2 buttons to fold the hat up and change to new style.
Bluetooth is easy to hook up.
Compatible for all smart phone and Bluetooth devices.
Built in rechargeable Li-Ion battery.
Perfect for outdoor sports: fishing, camping, picnic, hiking, working out, dog walking, holiday traveling,etc.
The hat can be Washed. (Speakers can be taken off so that you can wash the Bluetooth Music hat). After wash it, you can put them back into it again.
A wonderful gift for your family or friends in summer.

Specifications:
Type: Wireless Bluetooth Large Brimmed Checkered Nylon Hat
Material: Nylon
Color: Light Grey / Light Navy Green / Beige / Grey (Optional)
Size: Free Size
Bluetooth Version: V3.0+EDR
Frequency: 2.402GHz-2.480GHz
Transmission Distance: 10m or so
Transmission Distance of MIC: ≤1m
Li-ion Battery: 3.7V/110mAh
Charging Time: about 2Hrs
Standby Time: about 60 Hrs
Continuous Working Time: about 4.5Hrs
Bluetooth Name: LM-08/LM-09
Compatibility: for iPhone 6S/6, 6S Plus/6 Plus, 5s 5c 4s 4, iPad 2 3 4 New iPad Air, iPad Mini, iPod, Android, Samsung Galaxy S6 Edge, Note4 S5 S4, HTC, LG, Nokia, Blackberry, Sony, Motorola, etc.
Package Size: Approx. 25 * 35 * 2cm / 9.8 * 13.8 * 0.8in
Package Weight: Approx. 125g / 4.4oz

Package List:
1 * Bluetooth Music Hat
1 * Charging Cable
1 * Instruction Manual