Band 4 and Band 6 headphones can be used for students' foreign language listening training and study exams, and can be used for foreign language teaching activities in junior high schools, senior high schools and universities. College English Band 4, Band 6, IELTS, TOEFL and other foreign language listening tests.

Secondary characteristics:

1, Band 4 and Band 6 headphones are a kind of listening teaching products for students to train and learn foreign language listening, which can be used in foreign language teaching activities in junior high schools, senior high schools and universities. College English Band 4, Band 6, IELTS, TOEFL and other foreign language listening tests.

2. Headphones of Grade 4 and 6 are audio /FM dual-function receivers, and LCD display is added. The frequency display is clear and intuitive, which is convenient to select the required frequency point and saves time.

This earphone can receive both campus audio signals and FM radio stations. AF is a dedicated audio frequency band.

Brief introduction to CET-4 and CET-6;

English Test Band 4 and Band 6 (CET-4&; CET-6 is a national college English test, which is a national unified single-subject and standardized English teaching test managed by the Higher Education Department of the Ministry of Education of China. Its purpose is to objectively and accurately measure the actual English ability of college students and provide evaluation services for college English teaching.

As a national teaching test, CET-4 and CET-6 are organized by the Ministry of Education of People's Republic of China (PRC) and held twice a year in the morning and afternoon on the same day. [2] From June 2005 1, the full mark was 7 10. Entrusted by the Ministry of Education of People's Republic of China (PRC), the National College English Testing Committee distributed transcripts to each candidate.