Features 1 BLUETOOTH 5 1: Wireless headset uses the latest Bluetooth 5 1 technology to provide you with a perfect connection to any Bluetooth compatible listening device With external microphone for mobile phone, tablet, PC, laptop 2 DUAL MODES: When the headphone is in Bluetooth mode, long press the switch button for about three seconds to turn it on The additional detachable 3 5mm sound cable can also be connected to any device with a 3 5mm headphone jack 3 ADJUSTABLE HEADB: Wireless Bluetooth headset is designed with an adjustable headb so it fit the shape of your head perfectly, is easy to store carry, is convenient to use anywhere It's the ideal gift for kids, family friends 4 STEREO SOUND: Wireless headset offers stereo HiFi grade sound quality powerful bass, helps you enjoy your music better The built in microphone volume control let you answer calls play pause songs with the push of a button 5 COMFORTABLE TO USE: Super soft memory protein foam leather ear cushions headb provide maximum comfort We recommend that you remove the headset every 2-3 hours to allow your ears to relax for better listening enjoyment to keep your head more comfortable specificationItem Type: Bluetooth Headset Material: ABS Battery Type: Built in 400mAh Lithium Ion Battery (Included) Memory Card: Support Up to 32GB (not Included) Bluetooth Version: Bluetooth 5 1 Transmission Distance: 10 Meters Frequency Range: 20Hz to 20KHz Speaker Size: Approx 40MM/1 6in Impedance: 32 PackageList 1 x BluetoothHeadset 1 x Microphone 1 x Sound Cable 1 x ChargingCable NoteAll data are measured manually, there are certain errors in the measurement results