TechPowerUp takes a look at the Razer DeathAdder V2 Pro
A quote from the article:
At long last, the classic DeathAdder has been given the wireless treatment as well. With a battery life of up to 120 hours in Bluetooth and up to 70 hours in 2.4 GHz mode, Razer's Focus+ sensor, optical main button switches, and an 87 g lightweight construction, the V2 Pro promises to be a successful continuation of the DeathAdder series.Razer DeathAdder V2 Pro Review