Samsung wireless charger

Let's get to the point
1. Samsung's first generation horizontal wireless charger

Model: ep-pg920i
Interface: Micro USB
Output power: 9W (interface loss)
Release time: 2015 Samsung S6
Color: black, white
2. Samsung's second generation horizontal wireless charger

Model: ep-pn920
Interface: Micro USB
Output power: 9W (interface loss)
Release time: 2015 Samsung note5
Color: black, white
3. Samsung's third generation vertical wireless charger

Model: ep-ng930
Interface: Micro USB
Output power: 9W (interface loss)
Release time: 2016 Samsung S7
Color: black, white
4. Samsung fourth generation folding wireless charger

Model: ep-pg950
Interface: type-C
Output power: 10W
Released on: Samsung S8, 2017
Color: black, brown