GeekVape Q Series Pod Replacement
These pods are refillable cartridges designed for the Q-series of devices from GeekVape (for example the Sonder Q, Wenax Q, Aegis Q, etc)
Capacity: Each pod holds 2 mL of e-liquid (in many jurisdictions) with some variants listing up to 3 mL depending on region.
Filling method: Top-fill design (some say under mouthpiece or via removable cap) which makes refilling clean and relatively simple.
E-liquid window: Transparent or clear-view e-liquid level window so you can monitor how much remains.
Coil / Resistance options: Built-in mesh coils with multiple resistance options to suit different vaping styles:
0.6 Ω (suggested 18-25 W)
0.8 Ω (12-18 W) 
1.2 Ω (8-12 W) — better for a tighter MTL (mouth-to-lung) draw.
In some places a 0.4 Ω version is listed for more direct lung style or higher power devices.
Compatibility: Works with the GeekVape “Q” platform devices (Sonder Q, Wenax Q, Aegis Q)
Durability & technology: Some versions mention “VPU tech” which is said to offer a smoother flavour experience, longer usage lifespan and better safety.
Pack size: Usually a 3-pack (three pods per box) so you can have spares or different flavours ready.