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Black rectangular mini voice amplifier with wired headset microphone and waistband, 218 grams, ABS UV piano paint finish

Shenzhen Shidu Digital Technology Co Ltd

Shenzhen Shidu Digital Technology Co Ltd S511 10W 218g headset

SKU CH-TWCK-NGFM4

A 10 W portable voice amplifier with a 270-degree rotatable wired headset, 2000 mAh battery for 12 hours playback and 218 g weight

  • ColorBlack
  • SpeakerNo
  • VersionNo

Color Black

  • Black
  • Chalk

Struck-through versions exist but are not stocked here.

  • 10 W output amplifies voice across 15 000 sq ft
  • 2 000 mAh battery delivers up to 12 hours playback
  • 270° rotatable mic adjusts for comfortable speaking position
  • Weighs only 218 g with waistband for hands-free portability
  • Supports MP3 via AUX USB TF card for flexible audio input

Compact voice amplifier for mobile presenters

The Shidu S511 is a lightweight personal PA system built for teachers, coaches, tour guides and fitness instructors who need clear voice projection without a fixed installation. At 218 grams it clips to a waistband or slips into a pocket, and the 270-degree rotatable headset microphone lets each user set the boom exactly where it picks up best.

Replaces bulky megaphones and tethered PA units

Unlike heavy shoulder megaphones or AC-powered speakers, this unit runs on a built-in 2000mAh lithium cell and accepts audio from AUX, USB or TF card in MP3 format. The jump is worth it when you move between classrooms, outdoor courts or exhibition halls and need up to 12 hours of amplification from a single charge.

10 W output covers 15000 square feet

The 10 W dual-voice-coil driver delivers speech and background tracks across large rooms or open spaces, while the ABS UV-painted shell resists knocks and scratches during daily transport. It runs out when a venue exceeds its coverage area or when a multi-speaker setup is required for zone paging.

Highlights

  • 10 W output amplifies voice across 15 000 sq ft
  • 2 000 mAh battery delivers up to 12 hours playback
  • 270° rotatable mic adjusts for comfortable speaking position
  • Weighs only 218 g with waistband for hands-free portability
  • Supports MP3 via AUX USB TF card for flexible audio input

Specifications

BrandSHIDU
ColorBlack
SpeakerNo
VersionNo

Questions about this item

What waist sizes does the included waistband fit?

The supplied waistband is adjustable and designed to hold the 218 g amplifier securely during teaching, coaching or tour-guide use.

How do I charge the 2000 mAh battery correctly?

Plug the provided charging cable into any 5 V USB power source; the unit charges without a separate charging head and reaches full capacity in a few hours.

How long will the 2000 mAh battery last before it needs replacing?

The lithium cell delivers up to 12 hours of playback per charge and retains useful capacity for hundreds of cycles; replace the whole amplifier when run-time drops below your needs.

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