This is a defective item. The left side has an internal malfunction, causing the red and white lights to blink. It is not usable, so please confirm this before purchasing. Someone familiar with machinery may be able to repair it. Also, if you send it to Bose for repair, they may offer a trade-in, allowing you to purchase the current earbuds at a lower price. Included accessories: Case Earphones Earpads Charging cable The Bose QuietComfort Earbuds II are wireless earphones featuring noise-canceling technology. They offer exceptionally clear sound quality, making them ideal for listening to music and making calls. [Brand] Bose [Category] Wireless Earphones [Color] Black [Connectivity Technology] Bluetooth [Features] Noise Canceling Bose QuietComfort Earbuds Black Brand: BOSE QuietComfort Wearing Style: Separate left and right, completely independent Earphone/Headphone Type: Canal type Color: Black Wireless/Wired Connection: Wireless Earphone/Headphone Functions: Noise canceling, Microphone, Sound quality adjustment, Waterproof, Splashproof, Remote control Wireless Standard: Bluetooth IP Rating (Waterproof Rating): IPX4 Charging Port: USB Type-C Charging Time: 1.5 hours Weight (g): 17.0 g