Rolton K400 Headset Mic & Portable Voice Amplifier Kit

Rolton K400 Wired Headset Microphone & Portable Voice Amplifier Kit

Take your voice further with the Rolton K400 Headset Microphone and Portable Voice Amplifier Kit — the all-in-one audio solution designed for teachers, tour guides, presenters, promoters, and meeting hosts. Compact enough to clip onto your belt, yet powerful enough to fill a room, this mini loudspeaker kit delivers clear, amplified sound wherever you go.

Key Features

• Powerful 5W+ Audio Output — Crisp, clear amplification for classrooms, outdoor events, and presentations
• Professional Omnidirectional Condenser Headset Mic — Wired headset microphone picks up your voice naturally from any angle
• 1200mAh Rechargeable Battery — Up to 8 hours of continuous use; detachable 18650 battery for easy replacement
• USB Charging Compatible — Charges via any standard 5V USB charger (mobile phone charger recommended); charger current above 500mA
• USB & TF Card Music Playback — Stream your own audio files directly from a USB drive or TF/microSD card
• Knob Volume Control — Simple rotary dial for effortless real-time volume adjustment
• Ultra-Compact Design — Dimensions: 8.5cm (H) × 8.5cm (W) × 3.4cm (D) | 3.3" × 3.3" × 1.2"
• Hands-Free Comfort — Includes a waistband belt clip so you can move freely while speaking

Ideal For

• Classroom teaching and lectures
• Tour guiding and outdoor narration
• Business presentations and meetings
• Promotions and trade show demonstrations
• Singing practice and vocal performances

Specifications

What's in the Box

• 1 × Rolton K400 Loudspeaker Unit
• 1 × 1200mAh Rechargeable Battery
• 1 × Professional Wired Headset Microphone
• 1 × USB Charging Cable
• 1 × Waistband Belt Clip
• 1 × Instruction Manual

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For more information on safe use of audio equipment and hearing health, visit the CDC's Hearing Loss Resource Center.

Frequently Asked Questions

Q: What is the Rolton K400 voice amplifier kit best used for?

A: The Rolton K400 wired headset microphone and portable voice amplifier kit is ideal for classroom teaching, tour guiding, business presentations, promotional events, and meetings. Its compact, belt-clip design allows hands-free, mobile use so you can engage your audience without being tied to a podium.

Q: How long does the battery last on the Rolton K400 loudspeaker?

A: The built-in detachable 1200mAh 18650 battery provides up to 8 hours of use. When playing music at 50–80% volume, expect approximately 4–8 hours of continuous playback. The unit charges via any standard 5V USB cable, such as a smartphone charger (500mA or higher current recommended).

Q: Can the Rolton K400 play music from a USB drive or memory card?

A: Yes! The Rolton K400 supports both USB disk and TF (microSD) card playback, allowing you to play background music or pre-recorded audio directly through the built-in speaker — great for presentations, fitness classes, or guided tours.

Q: Is the headset microphone included in the kit?

A: Absolutely. The kit comes complete with a professional wired omnidirectional condenser headset microphone, a USB charging cable, a waistband belt clip, and an instruction manual — everything you need right out of the box.