In ear headphones adopt wired design (non wireless)
Built in microphone with controller (answer or end calls; pause or skip tracks)
20-20KHz frequency range; 94 ± 3dB; Maximum input 10mW
Including 2 spare silicon covers
Durable gold-plated 3.5mm jack
Compatible with any device equipped with a 3.5mm jack, including Android and iOS smartphones; Devices without a 3.5mm jack, such as iPhone 7, 8, 10, and Pixel 2, require an adapter
Upgraded internal circuits can solve durability issues with older versions
Product dimensions: 2.4 x 0.5 x 0.6 cm (length x width x height), with 4 feet (approximately 1.2 meters) of wire attached
Note: If the size of the earplugs does not match the size of the ear canal, or if the headphones are not worn correctly on the ear, you may not be able to obtain the correct sound quality or call performance. Replace the earplugs with ones that better fit the ears.