TechPowerUp reviewed the Fantech Aria XD7
A quote from the article:
With the Aria XD7, Fantech present their first ultra-lightweight mouse, weighing just 60 g. The Aria also comes equipped with PixArt's latest PAW3395 sensor, Kailh GM 8.0 switches, and pure PTFE feet. Lastly, the Aria features both 2.4 GHz and Bluetooth connectivity.Fantech Aria XD7 Review