Cordless Hair & Beard Trimmer ST622 - Quiet 3-Hour Runtime

In this review the Supreme Trimmer ST622 is evaluated for barbers, stylists, and home users who need a quiet, precise finishing tool. The bottom line: this trimmer stands out for its removable T-blade and adjustable zero-gap capability, making it a strong pick for anyone who values close lines and easy maintenance. It also offers a long battery runtime and a simple digital display, so those who want an ergonomic, low-noise trimmer for extended sessions will find a lot to like.

Key Features

• Detachable T-Blade: The removable T-blade system makes cleaning and blade swaps straightforward, with Deep Tooth blades for Black & Gold and Standard Tooth blades for Red & White models.
• Quiet 2-Speed Motor: Two speed settings at 6000 and 7000 RPM deliver smooth blending while remaining quiet enough for clients sensitive to noise.
• Long Battery Life: A useful battery display and up to 3 hours of runtime let professionals complete multiple appointments on a single charge.
• Zero-Gap Close Cut: The trimmer can be zero-gapped for precise lines and sharp edges, useful for detailing and finishing work.
• Ergonomic Lightweight Design: Finger grooves and light construction reduce hand fatigue during long cutting sessions.

Who It's For

The ST622 is best for barbers and stylists who need a reliable finishing trimmer with removable blades for hygiene and precision. It is also a solid choice for home users who want professional-level close cuts and the convenience of a long battery life and a clear battery display.

Those who prioritize ultra-dense motor torque for heavy bulk cutting or need a full clipper for thick-head haircuts should look elsewhere; this model is optimized as a finishing and detailing trimmer rather than a primary bulk cutter.

Pros & Cons

Pros

• Removable T-blade system simplifies cleaning and blade replacement for consistent precision.
• Quiet, two-speed motor provides professional performance with lower noise levels for client comfort.
• Long 3-hour runtime and a digital battery display help manage long sessions without surprises.
• Ergonomic, lightweight body reduces fatigue during extended use.

Cons

• Some customers note mixed feedback on battery longevity and long-term durability, so expect normal wear over time.
• Replacement blades are sold separately, which adds cost for frequent blade changes.

Specifications

Our Verdict

The ST622 is a well-rounded finishing trimmer that offers excellent value for professionals and serious home users who need precise lines and easy blade maintenance. Its quiet two-speed motor, removable blade system, and long battery life combine into a practical tool for detailed work; buyers should be aware that replacement blades are extra and some users report mixed long-term durability.

Frequently Asked Questions

How long does the battery last on a full charge?
Expect up to 3 hours of runtime and a digital display to monitor remaining charge.

Are replacement blades included?
Replacement blades are available separately; Black & Gold use TB34D and Red & White use TB44D.

Can it be zero-gapped for close edging?
Yes, the trimmer supports zero-gap adjustment for very close, precise lines.