Features: Foldable crib holder arm bracket + Cross(option) + Windup music box(option)+12 tunes electrical music box(option)+35 tunes electrical music box(option)+TF card digital music box(option) Sturdy arm easily attaches to crib Light weight and easy to carry Help baby take vision exercise Help baby go to sleep faster. Bring your baby rich visual enjoyment and improve the curiosity about the outside world. Create a good environment to communicate for the parent and baby Specifications: ------Arm Bracket Material: Plastic Color: White Height: 45.7 cm Weight: 454g Option :Bracket ( SKU:H18NFB005DA ) ------Cross (option) Material: Plastic Color: White Length: 33cm Option :Bracket+Cross ( SKU:H18NFB005DB ) ------Wind Up Music Box (option) Color: White Material: ABS And Metal Music Box Inside Size: Approx3px*175px*75px(4.72"*2.75"*1.18") Weight: 140g Option :Bracket+Cross+Windup Music Box Option :Bracket+Windup Music Box ( SKU:H18NFB005DC ) ( SKU:H18NFB005DF ) ------12 Tunes Electrical Music Box (option) Color: White Material: ABS material in white without pollution Size: 8.2*8.2*87.5px Weight: 5.7oz/162g Playing speed: 12-20" Full playing time: 2-3' Power by 2 x AA batteries (not included) Red button: on/off Green button: next song. Option :Bracket+Cross+12 Tunes Electrical Music Box Option :Bracket+12 Tunes Electrical Music Box ( SKU:H18NFB005DD12 ) ( SKU:H18NFB005DG12 ) ------35 Tunes Electrical Music Box (option) Color: White Material: ABS material in white without pollution Size: 8.2*8.2*87.5px Weight: 5.7oz/162g Playing speed: 12-20" Full playing time: 2-3' Power by 2 x AA batteries (not included) Red button: on/off Green button: next song. Option :Bracket+Cross+35 Tunes Electrical Music Box Option :Bracket+35 Tunes Electrical Music Box ( SKU:H18NFB005DD35 ) ( SKU:H18NFB005DG35 ) ------TF Card Digital Music Box (option) Dimensions (L*W*H): 3.3in*3.3in*1.34in Weight: 5.3oz Color: White Micro SD Card Capacity: 128M (can use 2G Capacity Card) Power Source: 2 AA batteries(not included) Support USB Data Transmission: YES There are 12 tunes already preloaded before shipping, you can download any other music or audio stories at you will via USB cable. Option :Bracket+Cross+TF Card Digital Music Box Option :Bracket+TF Card Digital Music Box ( SKU:H18NFB005DE ) ( SKU:H18NFB005DH ) Package Includes: 1 x Baby Arm Bracket 1 x Cross (option) 1 x Windup Music Box (option) 1 x 12 tunes electrical music box (option) 1 x 35 tunes electrical music box (option) 1 x 128M TF card digital music box (option)