riginal spot: CN; GUA Use: DJ Function: Noise Reduction Type RF-309 Brand Name: GO-ON Model: Headband Color: Black Communication: Party silent et Channel: 2 or 3 channel (optional) Battery Capacity: 500 MAH Operation Time: over 10 hours Receiving distance: more than 500 meters Name: RF-309 part headset Item: silent disco Certificate: CE RoHS FCC Feature: comfortable Important: Add my logo on the 20 head. The logo is you send in attachment.