Feature 132.8ft WIRELESS RANGE: The Bluetooth hat utilizes wireless bluetooth technology for faster and easier pairing with any bluetooth enabled smartphone or tablet device, 32.8ft wireless range. 23 BUTTONS: The simple panel of the Bluetooth hat displays 3 prompt buttons for basic control functions by pausing/playing music, and the ability to answer calls, skip songs, and control volume. 3ADJUSTABLE: The head size of the hat is 20.5 to 25.2 inch (about 52.1 to 64.0 cm), adjustable according to your head circumference. 4STEREO AUDIO OUTPUT: The Speaker hat has excellent stereo audio output, allowing you to enjoy your music at any time, for up to 8 hours of playing music or talking on the phone, great for outdoor sports. 5APPLICATION SCENARIO: The microphone allows you not to miss any incoming calls, perfect for fitness, fishing, running, skateboarding, hiking, camping, skiing and other outdoor activities.Item Type: Hat with Bluetooth SpeakerMaterial: Acrylic, Plastic, Electronic ComponentsBattery Type: Lithium Battery (Ship with Inbuilt Battery)Battery Capacity: 180mahPower Aupply: USB InterfaceBluetooth Version: V5.0Transmission Range: Approx. 10meters / 32.8ftCharging Time: 2HEndurance: 8HColor: Black .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x HatwithBluetoothSpeaker (Ship with Inbuilt Battery)1 x Charging Cable1 x User Manual