Record your voice on all pages or only several pages 10 seconds duration for each page Holds 24 photos. 1)Product Dimension: L19.5 x W14.2 x H1.57" (495 x 360 x40mm) in order to hold A3 picture L16.5 x 11.7" (420 x 297mm) 2)Leatheroid is used for the cover and back cover. 3)Powered by 2 AAA batteries. Flash memory preserves even when changing batteries. 4)Recording Duration: 10s for each button, total 240s 24pcs buttons,1pcs REC, 1pcs LED, 1pcs Reset are on plastic case surface. Refer to the sample TERS provided and below pictures。 5)On-Off switch beside the case. One full set stickers with yellow numbers(from 1 to 24) printed will be packed in the PP bag separately. No need stick on the pocket. 6)1pc/poly bag, 10pcs/CTN Carton Size：510×370×380mm GW：18kg/CTN