There are marks as if a sticker has been peeled off, but the item is unopened. Please check the 6th image. I received it as a gift, but I haven't had a chance to use it. Feel free to ask any questions. Communication method: Bluetooth 5.2 Codecs: aptX Adaptive/aptX/AAC/SBC Continuous playback time: Approximately 9 hours Charging time: Approximately 1.5 hours Weight: 7.9g "TRUE SOUND," which combines unique acoustic and electric technologies, a unique technology for enjoying good sound even at low volumes - Listening Care, an ambient sound function that allows you to hear outside sounds, a gaming mode that reduces latency, an in-ear detection function that automatically plays/pauses when you put on/take off the earphones, TrueWireless Mirroring support, IPX7 waterproof performance, a battery case that allows for up to 34 hours of playback, 5 sets of ear tips and 4 sets of ear fins included, a total of 5 color variations, and a dedicated app - Headphone Control.