Show your gaming loyalty with Super Mario kids Bluetooth headphones! Head out on your own adventure with Mario - gaming’s best character - on both earcups and run! Featuring the latest Bluetooth technology with a built-in microphone, these wireless headphones have a playtime of up to 30 hours and a working distance of 10 metres. They are comfortable and adjustable and offer superb sound quality at a restricted limit of 85 dB which is the maximum recommended level for children aged 3-7 years. They can also be used with the wire attached if required. Features and Benefits Wired Option for Long Journeys - They can also be used with the wire attached if required for instance on plane journeys. Bluetooth - Featuring the latest Bluetooth technology these wireless headphones have a playtime of up to 30 hours and a working distance of 10 metres. Comfortable - They are comfortable and adjustable and offer superb sound quality at a restricted limit of 85 dB which is the maximum recommended level for children aged 3-7 years. Specifications Official Nintendo / Super Mario Merchandise Speakers: 40 mm Drivers Frequency Response: 20 Hz - 20 KHz Impedance: 32 ohm Sensitivity: 85 dB ± 3 dB Bluetooth version: V5.0 + EDR Battery: 500mAH, Lithium battery Working time: 30 hours Operation Distance: 10 metres Headphone Dimensions: 15.5 x 16 x 6.8 cm Headphone Weight: 114 g Packaging Dimensions: 7 x 21.1 x 7.9 cm Weight: 294 g Colour: Blue/Red