Features:1. High-quality simulated protein leather, comfortable to wear all day2. Bluetooth 5.3, Stable signal, lower power consumption3. 40Mm bass diaphragm, enjoy shocking bass4. Sound insulation and noise reduction, suitable for use in multiple scenarios5. Skin-friendly, delicate and soft design, silky and elastic6. The headband of the earphone adopts high-rebound skin-friendly air cushion cotton, which is comfortable and non-oppressive7. Built-in heavy bass diaphragm, easily create a surging bass sound field, the sound dives deeper, and the drum rebounds more powerfully, thus bringing shocking bass enjoyment8. High-fidelity full-range speaker, high resolution and low distortion, brings a vivid on-site experience9. Foldable design, easy to carry outproduct parameters:1. Material: abs2. Bluetooth version: 5.33. Wireless working range: 10m4. Speaker diameter: 40mm5. Sensitivity: 108- 3db6. Frequency response range: 20-20khz7. Decoding method: sbc8. Supported protocols: a2dp, avctp, avdtp, avrcp, hfp, spp9. Input voltage current: dc 5v 1a10. Audio input interface: 3.5Mm11. Audio band: 87.5-108Mhz12. Memory card: maximum support 32g13. Charging interface: type-c usb-c14. Battery capacity: 500mah15. Play time: about 55h medium volume 16. Talk time: about 35h17. Charging time: about 2.5 Hours18. Headphone size: 196 x 182 x 82mm19. Product weight: 225g20. This product is manually measured, and there may be an error of 0.1-0.2 Mm and 0.1-0.2 G in length and weight there may be...