[Long Battery Life & Fast Charging] The built-in 170mah rechargeable battery provides over 4 hours of continuous usage, while the included spare batteries extend operation time. the red charging light turns off automatically when fully charged, so you always know the power status. stay connected throughout your workday without frequent recharging. [Easy Pairing & Stable Connection] Simply turn on the device to activate pairing mode, indicated by alternating blue and red led lights. quickly connect to your smartphone or tablet by selecting pn10 in bluetooth settings. the strong signal maintains a stable connection within 30-40cm, ensuring uninterrupted communication without dropouts or interference. [Crystal Clear Sound Quality] Equipped with a high-sensitivity microphone and advanced audio technology, this bluetooth earpiece delivers stable, noise-free calls and immersive music playback. enjoy crisp, distortion-free sound whether you're answering calls, listening to music, or attending virtual meetings. the ergonomic fit ensures comfort during extended use. [Innovative 2 in 1 Design] This bluetooth pen combines a fully functional wireless earpiece with a smooth-writing refillable ink pen, offering convenience for business professionals and office workers. the and compact design ensures easy portability, making it perfect for daily use, meetings, or travel. no need to carry separate devices—this multifunctional pen keeps you connected and productive. [Practical & Portable Design] Designed for everyday use, this bluetooth pen supports smooth writing with a replaceable ink refill, just like a standard pen. the lightweight abs construction ensures durability while maintaining a professional appearance. perfect for business professionals, students, or anyone needing a discreet yet powerful wireless earpiece.