Feature:1. 1. Wireless Bluetooth Technology: The wireless music cap pairs faster and easier with any Bluetooth-enabled smartphone or tablet. 33 feet of wireless range, providing up to about 5 hours of playing music or talking time. Perfect for outdoor sports.2. 2. 2 in 1 Bluetooth Headphones and Sports Speakers: The Bluetooth speaker cap allows you to listen to music without wearing extra headphones. Microphone so you never miss a call. Perfect for gym, fishing, running, skateboarding, hiking, camping, skiing, and other outdoor activities.3. 3. Stylish, Comfortable and Washable: The simple panel display on the ear of the Bluetooth wireless hat has 3 prompt buttons. Go through basic controls for pausing/playing music and being able to answer calls, skip songs, and control volume. Bluetooth baseball caps are easy to remove and reinstall so you can wash the hat. Hand washable after removing the Bluetooth module.4. 4. High-Quality Audio: The Bluetooth speaker hat has an excellent stereo sound quality output for quick and easy pairing with smartphone or tablet devices. Let you enjoy music anytime, anywhere.5. 5. Ideal Gift: This Bluetooth baseball cap is an ideal Christmas, Halloween, Thanksgiving, New Years', and Birthday gift for men, women, boys, and girls.Specification:Material: Acrylic, Nylon, CottonHead circumference: 23.62inchWireless transmission distance: 10M (33 feet)Battery capacity: 200mAhFrequency range: 20-20KHZSensitivity: 90DBImpedance: 8 ohmsSpeaker size: 40mmCharging time: 2 hoursTalk time: 4-5HBluetooth music time: 3-4H (70% volume)Package List:1*Bluetooth CapNote:Due to the lighting effects and shooting angles, there is a color difference in the product, please understand.Due to manual measurement, there is a tolerance in the product size.