1. 48K/24bit audio resolution2. Delay time:Less than 6mS3. mission distance Greater than 20m4. Frequency response:10Hz 22KHz+-1dB5. Distortion:Less than 0.029%(@1KHz-10dBFS) How to use?1. Check up the battery level of the charging case/start charging2. Charge the charging case3. Charge other portable devices via the charging case4. Charge the mitter and receiver5. Pair up all over again - double click the buttons6. Switch the Channel banks7. Instructions for the wireless systemWireless frequency band:5.8GHz ISM frequency band.Anti-interference method:Frequency hoppingChannel bank's quantity:4Builtin lithium battery:Over 5 hrs battery life once fully chargedBattery: Rechargeable lithium battery 3.7V/500mAhFrequency response:10Hz-22KHzWireless frequency band:5.8GHz ISM frequency bandPurcahse Note:1. This product works normally only when the mitter and the receiver pairs up.It supports one-to-one and one-to-many.2. Please make sure the mitter and the receiver keep a distance away from wireless router or other wireless equipments during use.3. A maximum of 4 sets of mitters 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:84x100x46mm Package Contents:1 * Guitar mitter1 * Guitar Receiver1 * Charger Case1 * USB 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.