Replacement for the Following Battery Model/Part Numbers: 361-00126-00. Intended for/Compatible with the Following Garmin Smartwatch Models: Fenix 6x Pro (010-02157-00), Fenix 6x Sapphire (010-02157-10), Fenix 6x Pro Solar (010-02157-20), Tactix Delta Sapphire (010-02357-00). Tactix Delta Solar (010-02357-10, 010-02357-50). 3.7V 420mAh 1.55Wh Lithium-Polymer Rechargeable Battery Pack. Includes Free Installation Tools (Soldering Iron Not Included). 1 Year Replacement Warranty.