Characteristics and Interoperability Super Mario Run Wireless Bluetooth Headset KR-9900. Lovely headphones featuring the beloved characters of kids Super Mario Run Version Bluetooth version for the Super Mario Run Wireless Headset KR-9900: 5.0 Plug 40 mm in diameter Response frequency: 20 Hz – 20 KHz Attenuation: 114dB/mW 3.5mm stereo plug connector: Indeed. Support for TF Cards: Yes Length of Cord: 1.2 m +/-10% Twelve hours of play Standby duration: more than 100 hours 400mAh is the battery's capacity. BT Functions include playback, pause, volume control, and microphone. Extended Period Superior Audio Quality Outstanding audio quality and a long-lasting rechargeable battery with about 12 hours of continuous use Link AUX It also features an integrated microphone and an AUX cable port for connecting to your computer, tablet, or cell phone. Additionally, you can take calls. 5.0 Surround Ideal for enjoying your favorite music while