IP4471L Features Super bass sound effect Standard 3.5 mm audio plug Attached with a 1.2 m cable Compatible with all 3.5 mm jack digital devices Allows you to enjoy your favorite music at anytime Enjoy hands-free calling with the built-in microphone General Specs Brand & Model OVLENG ip820   Sound Super bass Type In-ear  Microphone Yes Frequency Response 20-20000Hz Sensitivity 96-99dB Impedance  16ohm±15% Connector 3.5 mm audio jack Cable Length 1.2 m Compatibility iPhone， iPod， iPad and other 3.5 mm audio jack digital devices Package Details Weight: 89.88 g Size: 12*14*4.3 cm