Review on NexiGo Nintendo Switch Handheld Mode Controller - Ergonomic Design, 6-Axis Gyro, Dual Motor Vibration - Blue & Red Color, Universal Compatibility (excluding OLED) by Richard Rob

Build quality is good. Durable yet lightweight. Easy to use, responsive and doesn't slip (an issue I had with the cons of the joy). If you're used to using professional controllers, you'll feel right at home with this controller. I only have two complaints about it. It is not easy to charge the system while in use. You must use a 15V adapter to power the controller and charge the switch. Using something with less voltage will render the controller useless. Using the adapter that came with the Switch works, but the cable isn't very long and it's awkward to remove from the dock. The best solution is to either meter your gaming sessions and charge when you're not gaming, or buy a 15V USB-C adapter with a long enough cable. Another complaint is that there is no resolution to the case. It's not a huge issue, but it would be nice to have something that places the controller more securely when traveling, like the existing Switch cases. Build quality can be good enough to be carried in a standard backpack, so this is only an issue for those who are a bit protective like me.