Specifications
Type:Battery grip for the EOS 50D/40D/30D/20D
Power Sources: (1) Battery Pack
(2)AA size batteries: Alkaline batteries
(3)AC adapter kit
Power Switch: Camera’s power switch
Dimensions: 142.7 (w) x 110.5 (H) x 75.7 (D) mm / 5.6(w) x 4.4(H) x 3(D) inches
Weight: Approximately 440g/11.5 oz.