For Canon 20D/30D/40D Cartridge style with shutter

• Shutter with half-press function,convenient for vertical shooting.
• Stable holding
• Accommodate two original batteries or six AA batteries
• Weight: 175g
• Material: ABS
• Output current: 4A
• Output voltage: 7.4V (6.8V-8.4V)
• Dimension: 142.7mm×110.5mmx75.7mm
• Power light: Capacity checking, the green LED light last 3 seconds. It’s red when the capacity less 20%.
• FCC / CE Certification