Black, 14.8V, 4400mAh, Li-Polymer Battery fits Msi, X-slim, X-slim X320, 65.12WhBattery Fits Models: X slim, X slim X320, X slim X320 037us, X slim X320x, X slim X340, X slim X340021us, X slim X340x, X slim X350, X slim X350x, X slim X360, X slim X370, X slim X370x, X slim X400, X slim X410, X slim X410x, X slim X420, X slim X420x, X slim X430, X slim X620 Battery Part Numbers: 925t2950f, Bty s31, Bty s32 Although a generic version of the battery, the battery we supply is designed and built to be as robust and as good quality as