TERSELY Bluetooth 5.0 TWS Wireless Earbuds $28.79 + Delivery ($0 with Prime/ $39 Spend) @ Statco Amazon AU

With built-in 1200mAH battery, the charging case can provide up to 8-9 full charge for both of the earbuds.

price updates at checkout.
As described on Amazon:
[TWS & BLUETOOTH 5.0] - Compared to other Bluetooth headphones with Bluetooth 4.1 or 4.2, TERSELY true wireless earbuds adopt Bluetooth 5.0 to ensure stable connectivity and smooth transmission in high speed and long distance with low consumption.

[POWERFUL CHARGING CASE] - With built-in 1200mAH battery, the charging case can provide up to 8-9 full charge for both of the earbuds. Moreover, it is also a compact and portable designed carrying case providing your earbuds the best protection. The charging box can also act as a power bank for your phones/tablets.
[QUICK PAIRING* & AUTO CHARGING] - After the first connect to your phone, the headset will connect to your device automatically everytime you take them out of the charger box. Auto turn off and charge after your put them back into the charger box.

[EXTENDED PLAYTIME] - Compact and lightweight magnetic charging case for you to carry the earbuds around. 5-6 hours playtime per charge and 50 hours in total, the earbuds strive to keep you company longer.
[STRONG COMPATIBLE ] You are able to enjoy the music or video with one device, but never missing any important calls from your phone. After first paired,It just takes a few seconds to pair and practical in your daily life!