AI-intelligent-voice Control Wireless Bluetooth Headset Switching Songs, Navigation, Making Calls Neck-mounted Earphones With Digital Display Sport Headphone Features: AI-voice-control: just say "Xiaojie Xiaojie" to the headset, you can wake up the, intelligent technology, and completely your hands Plug in card mode, you can listen to songs without a mobile phone: you can download songs to the memory card, plug them into the headset and play them. Running is easier without a mobile phone Bluetooth 5.3 chip, faster and more stable transmission: equipped with the new Bluetooth 5.3 chip, no sense delay, smoother viewing and games, penetration, and more stable signal Standby for up to 1000 hours, no need to worry about listening to music without power: built-in large capacity battery, low power consumption power technology, excellent, let you listen all day long Humanized design makes life more portable: Type-C charging interface is adopted. IPX4 meeting the living standard. Magnetic earphone, convenient for storage, without knotting or winding. Digital display of power, knowing the power of the headset Product Description: Listening time: 30 hours Transmission distance: about 10m Battery capacity: 300mAh Standby time: 1000 hours Charging input: 5V 1A Charging time: about 2 hours Working voltage: 3.4-4.2V Frequency response range: 2.4-2.480GHz Package List: 1x Bluetooth headset 1 x USB data cable 1x user manual