education product

Multifunctional Repeater

Product Description ?
1. Hi-Fi,high efficiency(>;7W),records and playbacks the tape 2. LCD display 3. Five levels of Speed change,Hi-Fi repeat time is 200 seconds,ordinary repeat time is 400 seconds
WH688 Digital MP3 Amplifier

Technical Specifications:

Size
85mm*45mm*11mm
Weight
300g
　
Lattice(128*32) LCD
Connected ; PC by
USB1.1(read 1000K Byte, write 800K Byte
EMS memory
Flash Memory:
Interactive Whiteboard

Functions
◆ ; Writing Function: Normal pen, Brush pen, Transparent Pen
1.Normal Pen: trim and smooth, suitable for alphabet and numerals handwriting
2.Transparent Pen: draw freely and change the
WH668 Recording-Amplifier

Functional Characteristics:

Use tape
C-60 Tape（or C-45,C-90)
tapespeed deviation:
4.76±3%
Record Frequency Range:
125Hz～6300Hz ; ; ; ±3dB ;
Amplifier Frequency Range:
80Hz～12500Hz ;
WH668B Wireless Amplifier

Functional Characteristics:
Use tape
C-60 Tape（or C-45,C-90)
Tape speed deviation:
4.76±3%
Record Frequency Range:
125Hz～6300Hz ; ; ; ±3dB ;
Amplifier Frequency Range:
80Hz～12500Hz ;

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