Sennheiser CX True Wireless review: You can't go wrong with that
Sennheiser CX True Wireless Earbuds - Bluetooth In-Ear Headphones for Music and Calls with Passive Noise Cancellation, Customizable Touch Controls, Bass Boost, IPX4 and 27-hour Battery Life, Black - Walmart.com
Amazon.com: SENNHEISER CX Plus True Wireless Special Edition, Bluetooth in-Ear Headphones for Music and Calls with Active Noise Cancellation and 24-Hour Battery Life – Matte Black (509247)