This is the power adapter for Raspberry Pi 4 Model B , with USB type C interface. And there is an ON/OFF switch button on the cable , press it to power on and press it again to power off.

Specifications:

1. Input : 100 V ~ 240 V , AC , 50/60 Hz
   
2. Outout : 5V 3A , DC
   
3. Weight : 100 g approx
   
4. Color : Black
   
5. Charging Port : USB type C
6. Cable length : 1m approx
   
7. Use For : Raspberry Pi 4 Model B

Features:

1. 5V 3A output provide enough power for your raspberry pi enven if you use lot of device on your raspberry pi .
   
2. There is the ON/OFF switch button on the charging cable to control the power conveniently ( press button to open , push again to close ) .
   
3. Suitable for Raspberry Pi 4 Model B