If you are looking for a Pro Controller for Switch, this will be your best choice. It is a third-party product, not manufactured by original brand.
Specification:
Type: Wireless Controller
Gamepad Operating voltage: DC 3.7V - 4.2V
Operating current: 20-30mA
Static current: 20-80uA
Vibrating current: 50-110mA
USB input voltage/current: DC 5V/3A
Available distance: 8m
Battery voltage/capacity: 3.7V /1300mAh
Continuous operating time: Around 6-8h (fully charged)
Charging time: 2-3h
Static time: Around 30 days
Package List: 1 x Wireless Pro Controller for Switch 1 x 1.2M Charging Cable 1 x User Manual