specifically designed to fit Jds Labs models including C421
ensuring superior service life and reliability
Dependability: Enjoy ultimate service life with a reliable power source
This high-performance battery offers a perfect blend of reliability and longevity to keep your equipment running smoothly
And other related part numbers
Li-Polymer Battery fits Fiio, Fx1221, X1 Ii, 3.7V, 1800mAh Industrial>>Survey Battery>>Graetz Survey Battery specifically designed to fit JdsLi Polymer Battery fits Fiio, Fx1221, X1 Ii, 3. 7V, 1800mAh Upgrade your audio experience with our high performance Li Polymer Battery, designed specifically to fit models such as Fiio Fx1221 and X1 Ii. This battery not only enhances your device's functionality but also ensures long lasting power and reliability. Key Features: Compatibility: Fits Fiio Fx1221 and X1 Ii models seamlessly. High Capacity: 1800mAh 6. 66Wh provides extended usage time.