-The product is made with stretchable material
to ensure maximum fitness.
-This product is proud of its 2-in-1 function
design, This knitted hat will not only warm your head but it also has a
convenient Bluetooth headset connection where you can listen to your favorite
songs, answer and reject calls hands-free.
-This hat is also equipped with LED lights,
very convenient when you are out on a stroll, jog, camping, and hiking at
night.
-This Bluetooth hat Is powered by a Set-In,
Chargeable Li-On battery can be charged via USB cable with long standby time.