I've been using these headphones for many years and loved them, but I'm selling them now that I've switched to AirPods. Even though they're an older generation, the sound quality and noise cancellation are top-notch, as you'd expect from SONY. They have a built-in microphone, making them convenient for online meetings, and I received compliments from others saying my voice was clear. Operation has been confirmed. Only the items shown in the photos will be included. I carried them around, so there are some scratches on the logo, the text on the side, and some paint chipping. The silicone eartips have been replaced. Wireless Noise Canceling Stereo Headset MDR-EX31BN Red Brand: SONY Wearing Style: Both ears, integrated left and right Headphone Type: In-ear, neckband Structure: Open-air Color: Red Wireless/Wired Connection: Wireless Headphone Features: Noise canceling, microphone, remote control Low-Frequency Response (Hz): 20.0 Hz High-Frequency Response (kHz): 20.0 kHz Wireless Standard: Bluetooth Wireless Features: NFC, multi-pairing Bluetooth Version: Bluetooth 3.0 Bluetooth Codec: aptX, AAC, SBC Drive System: Dynamic Driver Size (mm): 13.5 mm Charging Port: MicroUSB Charging Time: 2.5 hours Weight (g): 34.0 g Returns are not accepted to prevent swapping. Thank you for your understanding.