1. Intelligent noise reduction. High-quality digital chip, effective noise reduction, reduce noise damage to the eardrum.2. Dynamic speaker design. The received sound is processed to make the sound clearer.3. Simple operation, suitable for all groups of people.4. Small size, easy to carry. You can take it with you when you go out, and the charging box is designed for easy storage and charging at any time.5. Suitable for use in a variety of scenarios, with strong adaptability. It can be used in various environments such as daily communication and outdoor activities.Average high frequency value:less than equal 1204dBFull-scale gain:less than equal 385dBFrequency response range: 300-3600HzTotal harmonic distortion:less than equal 7%+3%Equivalent input noise level:less than equal 293dBCurrent consumption:less than equal 5mACharging time: 3hDue to different batches, there may be differences in product appearance, color, and printed text, which not affect the use.Colour:Blue & BlackMaterial:ABSPackage Contents:2 * earphones1 * charging case1 * Type-c charging cableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.