... laser, super laser beam and error correction, intelligent laser wavelength control.- USB2.0 interface, SD/MMC/MS card slots, 8-bit ... /60Hz), built-in 7.4v/2000mA lithium battery, short-circuit automatic protection.- Auto protection screen, dustproof design.- Infrared remote control.ACCESSORIES: Charger,Car ... to our website or contact us! Protable speaker with TV,Radio