Gechic On-Lap 2501M Portable Black Ultra-Slim 15.6" 16:9 LED LCD smart HD 720P monitor with built-in power supply and speakers, support HDCP, HDMI, VGA, MHL First 15.6" mobile monitor with built-in battary in the world Support HDMI, VGA, MHL input, can enjoy large picture clarity and comfort Provide the real mobility by this portable monitor Work without being connected to a power supply up to 10 hours Built-in volume output