Comfortable wear: ergonomic design, fit ear canal, comfortable and not pressure ear, wear for a long time will not feel tired, especially suitable for wearing in the workplace, improve work efficiency. High fidelity sound quality: Built-in high-quality audio chip, providing clear and delicate sound quality, let you enjoy the high fidelity music and call experience, help you focus on work. Intelligent noise reduction: The use of advanced noise reduction technology, effectively isolate the outside noise interference, let you immerse in music or call, improve concentration, especially for the need for a quiet environment in the workplace. Lightweight and portable: Small and lightweight design, easy to carry, no need to worry about the problem of wire entanglement, so that you can enjoy music anytime and anywhere, easy to cope with the work . Multi-function operation: Support a variety of operation modes, such as music playback, call answering, voice assistant, etc., easy to operate, make your work more convenient and efficient, improve work efficiency. Product Name: Factory earplug type noise cancelling earphone (changeable earplug head) Middle leather line: 30 cm /11.81 inches Braided thread on both sides: 40 cm /15.75 inches How to wear: earplug Earphone type :3.5mm wired earphone Sound unit :HIFI high resolution sound unit Usage scenario: With Bluetooth receiver, mobile phone, notebook can be used Color: Blue, orange Quantity: 1pcs/2PCS