3 en 1 Electrónica Digital metrónomo del sintonizador de generador de tonos micrófono incorporado Ajuste del LCD para guitarra cromática Bajo Ukulele del violín
Alta precisión DDS Digital función de doble canal señal fuente generador forma de onda arbitraria/pulso frecuencia metro 12Bits 250MSa/s sinusoide 12MHz
2 in 1 Multifunction deign: Ballpoint Pen +Teacher's PointerThe teaching pen is scalable, suitable for close teaching.Take off the pen cap, it can be used as a ballpoint pen, writing fluency.Pen-sized and lightweight that you can put it your pockets or handbag.Ideal presentation tool, widely used in the teacher teaching, and academic meetings occasions.