Arrowmax SL24C-35L Stealth Leopard SL Series Covert Earpiece – HD review

What buyers think

Buyer-review evidence is mixed but useful: many comments focus on voice clarity, describing audio as crisp and easy to hear, even when volume is kept relatively low. Comfort and stability also show up repeatedly, with the ear guard and included tip sizes described as making it easier to get a secure fit for long shifts. On the downside, feedback includes price sensitivity, occasional reports of persistent static, and fit or routing limitations, such as the cable being difficult to manage for some users. A smaller but relevant theme is that the earpiece can become clogged (commonly associated with ear wax), which can reduce or block sound until cleaned.

Design and audio approach: what makes it different

This is a listen-only covert earpiece, meaning it’s built to receive audio from compatible radio setups rather than act as a full headset with a mic. The SL24C-35L uses a balanced armature driver, which is typically selected for clearer, more detailed speech reproduction compared to older, more “tube-like” earpiece designs. It also uses a tubeless covert design intended to avoid the moisture and muffled-audio issues often associated with traditional clear-tube kits.

Fit and comfort: the ear guard matters

The ear guard and ergonomic in-ear design are meant to keep the earpiece from loosening during active work. It also comes with multiple ear tip sizes (with an M-size installed) plus replaceable acoustic filters, which can help you dial in comfort and audio. Review feedback suggests the fit can be excellent when the correct tip size is used, but it may require some adjustment if the first-installed tip does not match your ear well.

Compatibility with RSM and PTT systems

The SL24C-35L uses a 3.5mm audio jack and is designed to connect to speaker microphones (RSM) and PTT control units that provide a standard 3.5mm audio connection. A practical caution for buyers: it is not recommended for high-volume or amplified RSM outputs, since the balanced armature speaker is precision audio hardware rather than a high-power amplified device. If your setup is the kind that boosts audio significantly, check compatibility before purchasing.

Cable length and everyday routing

The cable is 24 inches (TPU, clear). That can be enough for many belt-and-ear wearing styles, but some users report it may feel short for their preferred routing, especially if you like to thread the lead inside clothing or route it to a different anchor point. If you plan to conceal the cable path carefully, measure your typical routing and consider whether you might want an extension solution.

Pros and cons, summarized

Who it’s best for

• People who want a discreet, in-ear listen-only accessory for work environments where you need to stay alert and lightly “hands-free.”
• Users with RSM and PTT gear that accepts a 3.5mm audio connection.
• Buyers prioritizing speech clarity and a stable ear fit for longer shifts.

Who should avoid it (or double-check first)

• Budget-focused buyers who compare earpieces primarily on price, since some feedback calls the value high.
• Anyone with audio setups that output high-volume or amplified RSM audio, given the balanced armature sensitivity.
• Users who need a cable length that supports heavy concealment routing, because 24 inches may be limiting.
• People who struggle to keep in-ear devices clear, since ear wax buildup can block sound.

Price and availability

The SL24C-35L is positioned as a premium covert accessory, with pricing around $109 USD based on the current listing data. Availability is limited (listed as “only 20 left in stock”), so if you’re matching it to a specific headset and radio workflow, it may be worth confirming compatibility and your fit needs promptly.

Verdict: is it worth it?

The Arrowmax SL24C-35L is a strong fit if you need a covert, listen-only earpiece that emphasizes clear speech and a secure ear guard for day-long use. The main reasons to pause are the price, potential static or not-fully-clear impressions depending on setup, and practical considerations like cable reach and in-ear clogging. If your priority is discrete comfort and understanding voices during radio use, and you can get the ear tip fit right, it’s an option worth considering.

Recommended next

Headsets & Microphones $19.00

★★★★★ 4.4/5 18 ratings

BCT22-K2 2-Wire Clear Tube Earphone Compatible with BaoFeng BTECH UV-5R

The BCT22-K2 is a clear-coil 2-wire surveillance-style earpiece with an in-ear tube, push-to-talk lapel/collar mic, and a 2-pin connector designed for select Kenwood, BaoFeng/BTECH, and NEXEDGE/NXDN/DMR compatible models. It’s a practical choice for hands-free radio use, especially in higher-noise environments, with the main tradeoff being a bulkier mic/overall profile versus some slimmer earpieces.