OKU - AIR-4 In-Ear Design TWS Wireless Earbuds (OKU-34)

The OKU AIR-4 (OKU-34) In-Ear Design TWS Wireless Earbuds appear to be a specific model of True Wireless Stereo (TWS) earbuds. If you'd like more information about their features, specifications, or availability, feel free to ask! Some details I can provide or help find include:

Audio quality: Are there any special drivers or codecs like aptX, AAC, or SBC?

Battery life: What's the playtime on a single charge, and how long does the charging case last?

Comfort & fit: How ergonomic is the in-ear design?

Connectivity: Do they use Bluetooth 5.0, 5.2, or later?

Additional features: Any active noise cancellation (ANC), transparency modes, or touch controls