Ultra-High Capacity Battery: * Built-in 260mAh large-capacity battery. * 30 hours of continuous talk time. * 40 days of standby time. * Effectively solves the problem of low power in Bluetooth earphones, freeing you from the constraints of music and calls. * Enters Deep Sleep mode automatically after 10 minutes of inactivity with the paired phone turned off, reducing battery consumption. * The CSR8615 smart chip Bluetooth processor has acoustic echo and noise reduction functions, and incorporates an 80MIPS Kalimba DSP core, equipped with technology to eliminate ambient noise, providing clear call quality. Stress-free listening, such as not missing anything. Also supports music and streaming media. * CVC6.0 Smart Noise Reduction: A powerful noise reduction algorithm that combines CSR's CVC technology, combined with a special silicon mini-microphone and DSP functions, incorporates a 20-channel mono equalizer and noise reduction, and echo cancellation functions. Compared to general Bluetooth earphones, the sound quality of calls and the microphone quality are better, and with the low-noise, high-sensitivity DSP CVC6.0 technology, dual microphones, and digital signal processing (DSP), ambient noise is reduced, realizing a more natural and distortion-free clear sound quality. Effective noise prevention enables stereo voice calls. Low noise, high sound quality: The CSR8615 smart chip Bluetooth processor has acoustic echo and noise reduction functions, and incorporates an 80MIPS Kalimba DSP core, equipped with technology to eliminate ambient noise, providing clear call quality. Stress-free listening, such as not missing anything. Also supports music and streaming media. CVC6.0 smart noise reduction. * Compared to general Bluetooth earphones, the sound quality of calls and the microphone quality are better, and with the low-noise, high-sensitivity DSP CVC6.0 technology, dual microphones, and digital signal processing (DSP), ambient noise is reduced, realizing a more natural and distortion-free clear sound quality. Effective noise prevention enables stereo voice calls. Due to shipping costs, it will be shipped without a box.