ACEFAST T9 Crystal Color Air true wireless earbuds in Porcelain White (EAN/MPN 6974316282549) connect via Bluetooth 5.3+EDR. They support SBC and AAC audio decoding and have a stated transmission range of 10 m.
Each earbud has a 9 mm moving-coil speaker with a stated frequency range of 20 Hz–20 kHz. The manufacturer lists about 6.5 hours of music playback or about 4 hours of calls at 50% volume, with about 30 hours of total working time.
The earbuds and case are made from PC and silicone; the manual specifies an IPX4 rating. The listed contents are two earbuds, a charging case, four pairs of eartips in SS/S/M/L sizes, a USB-C cable, a silicone case, a silicone lanyard and a manual.