ACEFAST T6 True wireless stereo headset * ENC noise reduction. * LED digital display. * Chip Bestechnic BES2300IU. * SBC / AAC. * Bluetooth 5.0. * Charging case 500mAh. * About 4 hours of music, or 3 hours of calls. * IPX4 waterproof. Bluetooth version / chip:v5.0 / Bestechnic BES2300IU Audio decoding protocol:SBC/AAC. Frequency response:20Hz~20kHz. Transmission distance:≥10m. Headset battery:40mAh. Headset working time:4 hours (music mode). 3 hours (calls mode). Charging case battery:500mAh. Total working time:About 20 hours. Headset charging time:About 1 hour. Charging case charging time:About 2 hours. Charging case input:DC5V / 0.4A. Sizes:49.5x42.4x29.6mm. Weight:About 39.5g. Waterproof rating:IPX4. Certification:CE, RoHS, FCC, EAC, TELEC, BQB, UL62368 test report. Feature 1:LED digital display. Feature 2:ENC noise reduction, clear calls. Feature 3:Support fast charge, charge for 10 minutes, use for 1.5 hours. Feature 4:Translucent material.