HDMI Repeater Signal Booster Extender 40 meters / 120-feet - Nextronics 40 meter / 120ft HDMI transmission distance at up to 4K. Even longer at lower resolutions. Compliant with HDMI 1.3, HDCP 1.1 For best results, use high quality twisted pair HDMI cable No power supply or batteries necessary to operate. 1080p, UHD 4k Resolution and 3d supported