Wireless Headset Single-Ear Wireless Bluetooth Earphone Headphone Type: In-Ear Connectivity: Wireless Wireless Communication Technology: Bluetooth ・Professional Chipset: With AAC decoding technology, you can enjoy sound with double the clarity compared to general Bluetooth earphones. Enjoy comfortably in various everyday scenes such as training, driving, walking, desk work, work, commuting to school, watching DVDs, and conference calls. ・4g Ultra-Lightweight & Doesn't Fall Out: Fits perfectly in your ear, so you can do light exercises like walking, cycling, and jogging without worry. ・Well-Balanced & Deep Sound: The 10mm dynamic driver and unique diaphragm reproduce a deep sound. The sound quality is clear and high-quality in all frequency ranges, with good balance and easy listening. ・Sound Quality Comparable to High-End Brands: The sound is well-balanced from low to high frequencies, with high resolution and a pleasant crispness. Stereo sound reproduction with clear high frequencies and rich mid-low frequencies, allowing you to feel more immersive. The contents are new, but the outer box has some stains. Please understand. I have various other items for sale as well. Please take a look from #yu's listing list ❤️ 4-35 #SingleEarWirelessEarphone #SingleEarBluetoothEarphone #WirelessEarphone #BluetoothEarphone Connection Type...Wireless Features...Bluetooth