✅ FlAT FREQUENCY AND HIGH SENSITIVITY -32dB+/-3dB,15Hz~18KHz, flatter frequency makes a better recording of vocals and instruments. “OFF" is for smartphone mode, ON" is for DSLR camera mode, make sure use the right mode to match your device. It's normal that a big noise might happen when plugging a microphone into a camera in auto volume mode, don't worry, just decrease volume a bit and it will eliminate the noise. ✅ COMPATIBLE WITH SMARTPHONE AND COMPUTER The 3.5mm TRRS audio Jack of lapel microphone is compatible with computer, iPhone and android, what surprise is ONE MORE 6.5mm ADAPTER is included, ideal for those who use DSLR, camera, or other professional audio devices. ✅ EXTREMELY LIGHTWEIGHT SMALL MICROPHONE We go above and beyond when it comes to material selection. Mini metal clip allows you to easily clip it to your collar, tie or pocket. We use state of the art lightweight materials to insure you barely even notice the mic is there ✅ 1X Lavalier Microphone (236 in cable); 2x Button Batteries (one for backup); 1x Adapter(3.5mm-6.5mm); 1x Metal Clip; 1x Wind Muff; 1x Manual; 1x Bag