1. 48K/24bit audio resolution2. Delay time:Less than 6mS3. Transmission distance 20m4. Frequency response:10Hz 22KHz+1dB5. Distortion:Less than 0.029%(@1KHz10dBFS)How to use?1. the battery level of the charging case/start charging2. Charge the charging case3. Charge other portable devices via the charging case4. Charge the transmitter and receiver5. Pair up all over again double click the buttons6. Switch the Channel 7. Instructions for the wireless systemWireless frequency band:5.8GHz ISM frequency band.Antiinterference :Frequency hoppingChannel bank's quantity:4Builtin lithium battery:Over 5 battery life once fully Battery: Rechargeable lithium battery 3.7V/500mAhFrequency response:10Hz22KHzWireless frequency band:5.8GHz ISM frequency bandPurcahse Note:1. This product works normally only when the transmitter and the receiver pairs up.It supports onetoone and onetomany.2. Please make sure the transmitter and the receiver keep a distance away from wireless router or other wireless equipments during use.3. A maximum of 4 sets of transmitters and receivers can be used in the same place simultaneously.4. If the red indicator flickers during use, it indicates low battery, please charge it in time.Colour:BlackMaterial:PlasticSize:84x100x46mmPackage Contents:1 * Guitar Transmitter1 * Guitar Receiver1 * Charger Case1 * USB CableOnly 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 +/ 13cm.