• Product Specifications: Voltage: 10.8 V, Capacity: 2700 mAh • Compatible Cameras: Canon EOS 1D Mark III EOS 1Ds Mark III EOS 1D Mark IV EOS 1D X EOS 1D C EOS 1D X Mark II EOS-1D X Mark III EOS REOS 1D X 33 • PSE Certified: This product complies with the Electrical Appliance Safety Law and has passed PSE certification, so you can use it with confidence • Multiple Protection: This product has built-in circuit protection to prevent overcurrent, overcharge, and over-discharge, so you can use it with confidence without causing any damage • After sales service: We guarantee the quality within one year of the date of purchase, if there is any problem during use, please contact us at any time