Features: Male voice to female voice Female voice changed to male voice Baby sound, KTV 12 sound effects including sound The function of bel canto or voice changer supports fine adjustment. Parameter: Signal to noise ratio: 106dB Dynamic range: 106dB Battery capacity: 250mA or 3.7V Charging input: DV5V or 1A Battery energy: 3.7wh Battery effectiveness: about 3-4 hours at full power Due to different batches, the appearance, color and printed words of the product , which will not affect the use. Material: ABS colour: Black Package Contents: 1 x Voice Changer 1 x Audio connection cable 1 x Charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.