1DUAL DRIVERS: Dynamic drivers earbuds feature a mix of BA and DD drivers. Each earbud has a 10mm dynamic diaphragm driver and a 6mm balanced armature driver, increasing sound density and extending detail. High resolution with rich textures and full vocals. A truly pure listening experience. Efficient and logical dual driver configuration delivers fluent, soft and detailed sound. 2MANUAL TUNING SUPPORT: Dual dynamic drivers earbuds support manual tuning, HIFI low frequency, balanced natural, popular music, beautiful vocals, four sound effects adjustable. Toggle adjustment by the included card for the tuning switch. 3HIGH AND LOW FREQUENCY: Dual drivers earbuds with appropriate low frequency gain and high frequency response in line with the characteristics of HRTF, so that the headphones have an objective indicator comparable to professional monitor headphones, but not as cold and hard as ordinary monitor headphones, the overall sound natural and rich feeling. 4EASY TO USE: IEM earbuds can be connected to a 0.78mm 2Pin interface Bluetooth receiver or adapter to convert to a completely wireless headset with high sound quality. Or connect it to a 0.78mm 2Pin connector headphone cable to make it a wired headset. 5IEM EARBUDS: HiFi stereo earbuds feature a resin cavity with an aesthetically pleasing design that blocks ambient noise to produce a quiet space and experience immersive sound. Lightweight design, stable and comfortable, long wear without pain, noise reduction and noise isolation.