1X Replacement Battery compatible with Creative Zen Micro/Micro Photo Carry an extra rechargeable battery for your Zen Micro for an additional 12 hours of nonstop music. This is a high capacity, rechargeable Li-Ion (Lithium Ion) battery with premium cell. Removable, rechargeable, and keeps your music going for an extra 12 hours. Voltage: 3.7 V Weight: 2oz.