Description: This headphone adopts high performance chip. It has high sensitivity and stability without frequency hopping. With LCD display, you can easily adjust to the frequency point you want, it's clear and intuitive. The headphone is ideal for use at school. It will deliver high-fidelity sound to your ears precisely and you will make less mistakes caused by objective factor expecially in an examination. Order it! Features: Made of ABS, the shell is solid and durable. Over-head design, you can adjust the earphone to fit your head appropriately. Earmuffs are from PU material, it will fit your ear snugly while reducing the noise from outside. Change the wireless headphones into wired headphones through the audio cable. Ideal for use in audio room, learning center, computer room, etc. Press S/M button and convert between single track & dual track, dual track provides better sound quality for music listening. Can store maximum 10 radio stations, brings convenience in daily use. Use flexible antenna, it is not easy to break off. The headphone is foldable, easy to store. Specifications: Color: Black Material: ABS Frequency Range: 50-108MHz Frequency Reponse: 200Hz-20000Hz Receiving Sensitivity: ≤18dB Distortion: ≤1% Working Voltage: 3V Battery: 2 * AA Battery Channel Selection: Automatic, Manual Cable Length: 1m Package Weight: About 224g Package List: 1 * Headphone 1 * Audio Cable 1 * User Manual