30 Pack Bulk Classroom Headphones Wired Black Adjustable Over Ear Earbuds Headphones with 3.5 mm Plug for Teen Adults Students Schools Library Computer Labs Office Airplane

Value Package: you will receive 30 black wired headphones with a 3.5 mm headphone plug, which is well suited for providing personal audio access to guests, students, or customers in high-use environments.
Head-Mounted Noise Reduction: head-mounted wired headphones better isolate environmental noise, ensure clearer audio output during use, are not easy to fall off, and are more stable than in-ear headphones.
Lightweight and Comfortable: the black headphones are designed to be lighter, reducing the burden and stuffiness when wearing; the sponge headphone sleeves ensure they are softer and more comfortable when in contact with the ears, allowing you to get a good use experience anytime, anywhere.
Retractable Adjustment: the bulk size of these computer headphones is retractable to ensure a good fit for various head shapes; suitable for teenagers over 12 years old and adults, the headphone straps are adjustable for more comfortable wearing.
Multi-Functional: these wired headphones for adults are compatible with various audio output devices with 3.5 mm jacks, such as mobile phones, tablets, laptops, desktop computers, MP3, MP4, radios, etc., and are suitable for personal audio access in classrooms, laboratories, offices, airplanes, gyms, and more