Excellent Condition ★Free Shipping★ Instant Purchase OK ★Same-Day Shipping★ Thank you for viewing from among the many listings. [Product Introduction] Sennheiser The latest fully wireless earbuds from Sennheiser, "MOMENTUM True Wireless 4" + Plantronics BT600 If you have a compatible Poly or Plantronics device, communication with your PC will be stable via the dongle. I am selling these because I purchased different earbuds. I am selling the high-performance genuine dongle BTD600, which can transmit aptX adaptive, at a bargain price as a set. I will also include the invoice from when I purchased it at e-earphone ^ ^ In-ear wireless earbuds equipped with active noise canceling function. A popular model with high-resolution sound quality supporting aptX Lossless, comfortable fit, and powerful noise canceling. - Brand: Sennheiser - Model Name: Momentum True Wireless 4 - Color: Silver - Accessories: Charging case - Design: In-ear - Features: Active noise canceling [Product Condition] I used these for about six months after purchasing them about a year and a half ago, and have since stored them in a dark place. Operation has been confirmed, no problems. Battery is good. No issues at all! *As this is a very delicate product in terms of hygiene, I have carefully cleaned and disinfected it in detail. Electrolyzed water used. Instant purchase is available. Thank you. *To avoid any misunderstandings, and because this is a delicate and important item that you will be using for a long time, please examine the photos carefully and make your purchase only after you are satisfied. There are some minor scratches, so please make your judgment based on the images. I have tried to capture all the areas that might be of concern ^ ^ To prevent swapping, returns and cancellations are not accepted. No pets, no smokers ^ ^ Many transaction records ●About Shipping: Ships within 24 hours, using the easy shipping service (Takkyubin) with compensation. #Sennheiser #WirelessEarphones #MOMENTUM #Wireless #Earphones #Bluetooth #Bluetooth