Model: A2 shocking external amplifierScreen size: 1.5 inches (inches)Memory card type: TF cardExpansion card: supportMode of operation: push buttonInterface: USB 2.0Headphone jack: 3.5Support audio formats: MP3, WMA, WAVScreen color: LCDScreen resolution: 128×64Menu language: Simplified Chinese, Traditional Chinese, English and other 26 languagesBattery type: dedicated lithium batteryBattery capacity: 450mAhLife time: 30 (hours)Body color: red, gold, blackMemory capacity: 8GB