teacher voice amplifier

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... for Model No. S268 Sound coverage 300~400square meter Output power 10W THD ≤1% Frequency domain 90Hz~18KHz Net Weight 238g...

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New Arrival High Quality Mini Portable Megaphone Foldable Bullhorn Handheld Grip Loud Clear Loudspeaker 3W waterproof plastic handheld...

Product Description: Introducing the Loud Speaking Phone, a high volume phone designed for noisy environments. This noiseless telephone device feature...

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Best cheap china analog open fit hearing aid for sale Signature feature Analogue BTE Operated with 13A battery Open-fit design,easy operating Mini siz...

... people, such as the elderly, it can help the in the classroom recording.can help students to do the class notes, can help reporters interv...

... with Dual Cooling Fans for Optimal Performance Description Broadcasting Radio and Television: Utilized in studios to ensure that live bro...

... interference (Band 8) 900MHz -- Uplink frequency: 890-915MHz/Downlink frequency : 935-960MHz Network support : 2G Gain :70±2dB Power Supply ...

Product characteristics: 1. On-board power amplifier module, high output power up to 25W, sound loud. Conversion efficiency is higher, fever is smalle...

... supply. 6 low trigger or 4 high trigger, 5W power output, suitable for all kinds of small reminders. Specification : Product Name YX8693 pro...

... thank you, a birthday thank you or a thank you. A stylish music card with a printed music note. This card suit almost every occasion for w...

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... and sporting events. It is typically made of lightweight and durable plastic material, and designed to sound and project it over long dist...

..., in terms of power, precision and reliability are higher than 14EA series. It is mainly used for television image signals, digital TV, telephone v...