Introduction
Most 510 batteries offer three voltage settings. Maybe four if you are lucky. The Rokin Dial takes a different approach: 21 discrete voltage levels from 2.2V to 4.2V, adjusted via a physical dial on the device. This granularity lets you dial in the exact setting for any cartridge rather than settling for "close enough."
The Dial targets users frustrated by the limitations of typical preset batteries. Different cartridges perform best at different voltages—what works perfectly for one may underwhelm or burn another. The Dial's precision solves this problem elegantly.
Design and Build
The Dial uses a compact form factor that fits easily in a pocket or palm. The device conceals most cartridge sizes within its body, providing discretion and protecting the cartridge from damage. The overall feel is solid without being heavy.
The namesake dial sits at the bottom of the device, rotating smoothly through its 21 positions. Each click feels precise and deliberate—you know exactly when you have moved to a new setting. The dial mechanism adds tactile satisfaction to voltage adjustment.
Auto-draw activation means no buttons to press. Simply inhale and the device fires automatically. This design simplifies operation and eliminates accidental activation in pockets. Connection confirmation lights indicate when a cartridge is properly connected.
What's in the Box
The Dial package includes:
- Rokin Dial battery
- Micro-USB charging cable
- Lanyard strap
- User manual
The included lanyard provides a carrying option, though many users will pocket the device instead. The charging cable is standard Micro-USB, compatible with most existing chargers.
Precision Voltage Control
The 21-setting voltage range represents the Dial's core feature. Starting at 2.2V for maximum flavor preservation and climbing to 4.2V for maximum vapor production, the range covers virtually any cartridge preference.
Low voltage (2.2V-2.8V): Maximum flavor, minimal visible vapor, gentle on cartridges. Ideal for high-quality distillates where taste matters most.
Medium voltage (2.8V-3.4V): Balanced performance suitable for most cartridges. Good vapor production with retained flavor.
High voltage (3.4V-4.2V): Maximum vapor density and effect. Best for thick oils that need more heat to vaporize effectively.
The ability to increment through this range in small steps means you can find the exact setting where a particular cartridge performs best—then remember that setting for future use.
Auto-Draw Technology
The buttonless auto-draw design eliminates the need to hold a firing button. Inhale, and the device activates. Stop inhaling, and it stops. This natural interaction feels intuitive and keeps the device simple.
Auto-draw also prevents accidental firing. Without a button to press, there is no button to accidentally hold in a pocket or bag. The device only activates when airflow is detected.
Some users prefer button-activated devices for more control over heating cycles. The Dial's auto-draw is its only firing method—there is no manual override. This is a design choice that works well for most users but may disappoint those who specifically prefer button activation.
Battery and Charging
The 500mAh battery provides moderate capacity—enough for a day of light to moderate use, but heavy users may need to charge daily. The compact size necessitates this tradeoff; larger batteries would require a larger device.
Micro-USB charging works but feels dated compared to USB-C. Charge time runs approximately 90 minutes from empty. The device includes short circuit protection to prevent damage from faulty cartridges or connection issues.
Who Should Buy the Rokin Dial
Precision seekers: If you have ever wished you could adjust your battery's voltage "just a little bit," the 21-setting dial answers that wish.
Cartridge collectors: Users with multiple cartridge types benefit from the ability to optimize settings for each one.
Discrete users: The auto-draw activation and concealed cartridge design maintain a low profile.
Portable priority: The compact size travels well and fits any pocket.
Final Verdict
The Rokin Dial does something genuinely different in a market full of similar devices. Its 21-position voltage dial provides control that typical three-setting batteries cannot match. The auto-draw activation adds simplicity, and the compact design enables true portability.
The 500mAh battery limits daily capacity, and the Micro-USB charging shows its age. Users needing all-day battery life should consider alternatives. But for those who prioritize voltage precision and portability over capacity, the Dial offers a compelling combination at a reasonable price.
The Dial proves that 510 batteries do not have to be generic. With thoughtful design and genuine innovation in voltage control, Rokin has created a device that stands out in a crowded category.
Related: Rokin Stinger Review