For sale: Sennheiser BTD700 USB Adapter [Supports aptX Lossless & LC3] Thank you. The following is an excerpt from a related website: ・The BTD700 Bluetooth dongle provides high-quality sound and seamless connectivity. Based on the positive response to the previous model, the BTD600, the BTD700 incorporates the latest features such as aptX Lossless and Auracast, allowing you to enjoy wireless audio more comfortably in all situations, including music, games, and calls. It always maximizes the performance of your headphones. ・Experience lossless audio with aptX Lossless. The BTD700 delivers clear and immersive sound without compromising sound quality. It is ideal for audio enthusiasts seeking an unparalleled listening experience. ・The BTD700 achieves ultra-low latency of approximately 30 milliseconds, ensuring perfect synchronization between audio and video. This enables smooth gameplay and an immersive viewing experience for gamers and users who enjoy video content. ・The BTD700 simplifies the connection process with its plug-and-play function. Simply insert the dongle into a USB port and pair it with your headphones once, and you can enjoy a high-quality audio experience without any troublesome settings. ・This product is compatible with a variety of devices, including Windows and macOS computers, Android and iOS smartphones, and even PS4 and PS5. *Some features will be available after a firmware update. ・The product will be reset to factory settings before shipping. The firmware for the earphones and dongle is up to date. Please check the condition of the product in the images. I have not checked everything, such as the product condition, operating condition, scratches, and dirt, so there may be oversights. Returns due to differences in personal subjective views between the images and the actual product are not accepted. Please refrain from purchasing if you are a perfectionist or if you are looking for a complete product. Please ask questions before purchasing, or check the images and make your purchase after you are satisfied with your own judgment.