Sony WI-C100 Wireless In-ear Bluetooth Sport Headphones in White have a built-in microphone and on/off switch. They feature Bluetooth 5.0 for a wireless range of 10m, with 15 hours of talk time and 25 hours of continuous audio playback. The headphones are IPX4 rated for sweat and water resistance, and have a 3-hour battery recharge time. They offer in-line control with volume and playback buttons, making them suitable for calls and music on the go.
eBay