《BUILD-IN MIC and COMPATIBILITY》 The ELECOM Headphone / Headset works with the high definition build-in microphone. Standard 3.5mm audio jack suitable for listening to music or audio books. Compatible with most of the Smartphones, PlayStation, PC and Tablets, such as iPhone / iPad / Android Cellphones / PC and more. 《TRUE SURROUND SOUND EXPERIENCE》 This ELECOM Headset offers excellent 40 mm audio drivers in combination with advanced audio technology. It delivers high quality simulated surround sound to make more intense. Also It is a safe design that does not make the sound too loud. 《PERFECT FIT FOR KIDS》 This special size was designed according to the physique of the child using the head size data for 1790 elementary school students in Japan. The padded headband, the soft and resistant ear pads and the individually adjustable microphone ensure maximum comfort. Even after intensive use for hours, the headband sits comfortably firmly without hurting. Microphone can be stored perfectly when not in use. 《COMFORT and PRACTICAL DESIGN》 Designed with an adjustable headband, snug pads and cushioned earpads without sharp corners. The cord is an almost 4 feet long fabric braided cable which does not easily get entangled. 《PRODUCT DETAILS》 Connectivity Technology: Wired. Connector Type: Standard 3.5mm audio jack. Size: 4.8" (121mm) X 1.7" (43mm) X 4.8" (122mm). Weight: 4.8oz. Audio driver unit: 40mm.