2-meter USB remote control extension cable with 4-speed regulation, 2/4/6/8/12-hour timing, and cordless switching function. Compatible with USB ceiling fans, USB desktop fans, USB car fans, and USB lights. Not suitable for devices with built-in batteries. Remote control powered by 3V CR2025 battery (included). Remove the insulation sheet before use. Designed for power supply only; does not support data transmission. This cable allows fan speed adjustment. Power cable length: 200cm / 6.56ft Remote control battery: 3V CR2025 (included) Input: 5V 2A Color: White Material: Plastic Package Contents: 1 x USB Extension Cable 1 x Remote Control Note: Only the items listed are included. Lighting and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3cm.