Bluetooth Beanie with Headphone Wireless Music Hat Cap, Unisex Music Cap USB Charging for Sports Running Walking Ski Camping Bike Gifts,Brown

Material: high-grade acrylic.Product category: Knit hat.Bluetooth specification: V4.2.Frequency range: 2.4026GHz-2.480GHz.Transmission distance: 10-15 meters.Charging voltage: DC 5VLithium-ion battery: 3.7V / 180mA.Channel: Stereo.Speaker power:...