What is the wireless sync dongle for Fitbit? - Quora
Fitbit Ultra F004 USB Docking Station Charging Dongle Dock Charger Only | eBay
Plugable USB 2.0 Bluetooth® Adapter – Plugable Technologies
Amazon.com: USB C Hub 15 in 1 for MacBook Pro/Air - Dell - Lenovo - HP and More; with Wireless Phone Charger; Dongle to 4K HDMI; VGA; SD/MicroSD Card Reader; Ethernet; 1