Call noise reduction and high fidelity soundThe neck strap headphones use a CVC6.0 noise cancelling microphone, which can reduce noise and improve the clarity of calls and music. Three different sizes of dual drive earplugs have tips at a 60 ° angle, so they can perfectly fit the ear canal and provide a good seal, allowing you to enjoy clear, loud, and high fidelity music and sound. 100H playback time: The wireless sports earbuds use a high-capacity 1000mAh lithium battery, bringing you amazing playback time. When fully charged, it can play music/calls for 100 hours and can last for 365 days in standby mode. Whether it's sports, watching TV, or traveling, it fully meets your battery life needs. And it is equipped with a battery level display to monitor the earphone's battery level in real-time. Bluetooth Connection and TF Card: The neck strap Bluetooth earbuds support a 64G TF card, which can not only wirelessly connect to the phone, but also insert the TF