Thank you TapTechNews for the tip from our netizen Xiao Zhan Gege! TapTechNews reported on May 13th that the OPPO official website is currently teasing a mysterious TWS earphones. This earphones will debut on May 15th at 10:00 AM, but the official has not released more information about it yet. TapTechNews speculates that based on the appearance of this earphones, it is likely to be the successor version of the 'OPPO EncoFree3 True Wireless Noise Cancelling Earphones' released in March 2023, named 'EncoFree4'. Referring to previous reports, the OPPO EncoFree3 supports Bluetooth 5.3, with a maximum noise reduction of 49dB, claimed to be the world's first bamboo fiber diaphragm design. The high-pitched sound unit is made of bamboo fiber material, significantly enhancing the delicate high-frequency sense while effectively reducing distortion. It also supports LDAC audio transmission protocol, starting at 499 RMB. Related reading: 'OPPO EncoFree3 True Wireless Noise Cancelling Earphones Released: First Bamboo Fiber Diaphragm, 49dB Noise Reduction, LDAC Support, Starting at 449 RMB'.