Uwell Crown 4 Sub-Ohm Tank

Uwell Crown IV Sub-Ohm Tank is the newest addition to Uwell’s popular Crown series, delivering enhanced performance and capacity in a sleek design. The tank features a 25.7mm base diameter with a 28mm bubble glass that holds up to 6mL of e-liquid, while the included slim glass option provides a 5mL capacity. A quarter-turn top cap reveals wide fill ports, and the 510 drip tip made of Delrin and stainless steel ensures comfort. Adjustable triple bottom airflow slots allow precise control over your draw.

The Crown IV coils feature a press-fit design and are built on the Crown 3 platform, now enhanced with Uwell’s patented self-cleaning base system. This innovation helps reabsorb excess e-liquid and reduces leakage and waste. The tank comes pre-installed with a 0.4Ω dual SS904L coil rated for 60–70W, and includes an additional 0.2Ω dual SS904L coil rated for 70–80W.

Crown IV Features:

• Dimensions: 54.8mm height x 25.7mm base / 28mm bubble tank
• Weight: 55g
• E-Liquid Capacity: 6mL (bubble tank) / 5mL (slim tank)
• Triple adjustable bottom airflow channels
• 510 drip tip – Delrin and stainless steel construction
• Press-fit coil system with self-cleaning base

Package Includes:

• Crown IV Sub-Ohm Tank
• 0.4Ω coil (pre-installed)
• 6mL bubble tank (pre-installed)
• 0.2Ω replacement coil
• 5mL straight glass
• Replacement O-rings
• Drip tip cover
• User manual