SHIDU SD-258 Portable Voice Amplifier 10W with Headset Mic — 12hr Battery, AUX/TF Playback

The SHIDU SD-258 is a compact 10W portable voice amplifier with headset mic that delivers clear sound for classrooms, tours, fitness classes and events without straining your voice.

This lightweight PA unit pairs an ergonomic headset microphone with a belt-clip speaker, supporting up to 12 hours of continuous voice use or 10 hours of music playback on a single charge. It accepts TF (microSD) cards and USB flash drives for background tracks, and also works as a wired speaker via a 3.5mm AUX input. Built to be durable and portable, it aims to make spoken-word projection effortless in rooms and outdoor settings.

How loud and clear is the SHIDU SD-258 for teaching or guiding groups?

The SD-258 produces a clean 10W output designed to carry a voice across large indoor spaces and open-air groups. Its circuitry minimizes distortion and whistling, focusing on intelligibility so listeners can hear words clearly at a distance.

• 10W output power for wide coverage up to around 1100 m² (approx.)
• Noise-reduction design to reduce hiss and feedback
• Suitable for groups up to about 120 people in typical conditions

What battery life and playback options does it offer during long days?

The integrated 1800mAh rechargeable battery supports roughly 12 hours of amplified speaking and about 10 hours when playing music, so it easily lasts through a full workday of instruction or guiding. A full recharge takes approximately 3–5 hours depending on the charger used.

• 1800mAh built-in battery for long sessions
• TF (microSD) and USB flash drive music playback with loop and repeat functions
• Rechargeable via standard USB, quick 3–5 hour charge time

Can I connect other devices, and how flexible is the setup?

Yes — the microphone jack doubles as an AUX input, allowing the unit to act as a wired speaker for phones, tablets or computers. The included headset keeps hands free while the detachable belt clip or waistband loop offers multiple carrying options for mobility.

• 3.5mm AUX input for external audio sources
• Headset microphone for hands-free speaking and clear voice pickup
• Detachable clip and waistband options for easy carrying

What durability and support can users expect?

The SD-258 is built from wear-resistant materials that withstand daily handling and travel. SHIDU backs the product with a satisfaction policy, warranty coverage and lifetime technical support for purchasers.

• Sturdy casing and components for regular professional use
• 30-day return policy and 36-month warranty for peace of mind
• Tips included to prevent microphone feedback during use

Who is this for: The SHIDU SD-258 is designed for teachers, tour guides, fitness instructors, coaches and presenters who need a lightweight, hands-free PA to project their voice without tiring. It also suits small-event hosts, group leaders and anyone who wants portable, reliable amplification with simple playback and long battery life.