Hi Can I use this system as one way communication from dental surgery (mic) to patient waiting room (amplifier with speaker) ?

Although it might work I would not recommend it for this purpose. It may not transmit through a closed door and you cannot tell easily if the mic is on or not. My wife uses it for her dance lessons and is always in direct line of sight. The main plus point of this unit is it's portability.

I need a recommendation for a suitable amplication system for use by a teacher in a classroom. this should be portable so it can be used in different

yes this is suitable to use in classroom, battery life is good and speaker is good

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🎙️ Own the room with wireless power and crystal clarity!

LIGHTWEIGHT WEARABLE DESIGN - At just 218g, the compact waistband amplifier keeps you hands-free and comfortable during long sessions or tours.
ALL DAY POWER MOBILE CHARGING - Built-in 1200mAh battery offers up to 10 hours of use and doubles as a power bank to recharge your wireless mic on the go.
VERSATILE AUDIO INPUT COMPATIBILITY - Plug in via AUX or stream from TF cards and USB drives up to 32GB—perfect for seamless multimedia integration.
PROFESSIONAL GRADE VOICE AMPLIFICATION - Ideal for educators, guides, and performers who demand clear, powerful sound in any environment—stand out and be heard.
CRYSTAL CLEAR 2 4 G WIRELESS TRANSMISSION - Experience uninterrupted, high-speed audio with advanced anti-jamming tech—no more signal drops during your presentations.

The WinBridge S613 is a sleek, lightweight 18W wireless voice amplifier featuring cutting-edge 2.4G digital transmission for interference-free sound up to 20 meters. Equipped with a rechargeable 1200mAh battery providing 10 hours of continuous use, it also functions as a power bank for the wireless microphone. Compatible with AUX input and supports TF/USB media up to 32GB, this amplifier is perfect for professionals needing reliable, high-quality voice amplification on the move.

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Mounting type	Tabletop
Power source	Battery Powered, Corded Electric
Connector type	Aux
Item weight	0.48 Pounds
Impedance	32 Ohm
Manufacturer	WinBridge
Part number	WB-067
Item Weight	218 g
Product Dimensions	9.8 x 4.29 x 8.79 cm; 217.72 g
Item model number	S613
Shape	Round
Item Package Quantity	1
Special Features	Wireless
Included components	Amplifier, Battery
Batteries included?	No
Batteries Required?	No

WinBridge S613 2.4G Wireless Digital Voice Amplifier with Power Supply for Microphone Special Teaching Amplifier 18W 7.4V/1200MAH High Volume Classic Black

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