Do you want to enjoy the clear stereo music sound? This headphone features 40mm drive unit, clear low bass, you can enjoy the wonderful stereo music sound. The earbuds can reduce the noise to hear the clear sound. With Microphone function, you can answer or end the call via it. A great headphone to purchase it. 40mm Drive Unit Super low bass, unique sound performance, it can reduce distortion of the sound to bring clear stereo music effect. Microphone Function With microphone function, you can answer a call without your hand. PU Leather Earbuds Comfortable to wear, it can reduce the noise in the noisy environment, convenient for you. Adjustable Headband's StructureYou can adjust the headband of the headphones to fit your head, comfortable for you. 3.5mm Audio Cable No hassle with cables around your neck, which provides easy and secure usage. Foldable Design The earbuds can 90 degree rotation, convenient to carry, you can enjoy the stereo music anytime and anywhere. Specifications Name Foldable On-ear Headphone Brand LKER Model One Color Black, silver Connectivity Wired Frequency response 20~20KHz Drive Unit 40mm Headphone Impedance 35Ω ± 15% Sensitivity 118±3 dB Audio Plug 3.5mm Cable Length 1.35m Microphone Voltage Range 1.0V-10V(DC) Directivity Omnidirectional Microphone Frequency 100 - 10000Hz Product Weight 150g Product Size (L x W x H) 17 x 17 x 7 cm Package Size (L x W x H) 20 x 19 x 9 cm Package Contents 1 x Foldable On-ear Headphone, 1 x Audio Cable, 1 x Case, 1 x User Manual