Memory card needs to be purchased additionally if you need it
Packing list: 1 this product， 1 USB recharging cable
Music file format: mp3， WMA
Supporting operating system: Windows98/2000/XP
USB interface: USB 2.0
Storage: supporting maximum 8GB， TF card/micro SD card
Recharging power: DC 5V， 500mA，
Lithium Battery; DC 3.7V
Duration: 4 hours
Recharging time: 2-3 hours
Frequence response: 20Hz—20KHz
SNR: ＞85db
Working temperature: 0℃-45℃

2G Mobile Phone Memory Card， TF 2G Micro/SD Flash Memory Card
 

4G Mobile Phone Memory Card， TF 4G Micro/SD Flash Memory Card

8G Mobile Phone Memory Card， TF 8G Micro/SD Flash Memory Card

16G Mobile Phone Memory Card， TF 16G Micro/SD Flash Memory Card