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Specification:
*Material:plastic.ABS
*Size:82mm x52 x12mm.
*One buttons :have 4 sounds,each 3 seconds sound,total 12 seconds.
*Speaker:36 mm diameter plastic speaker,8 ohm,0.25w.
*Power:AG13/LR44 x 1.5v x 3pcs.
*Sample time: 5 days.
*Packing: each in oppbag.300pcs/carton.
music chip keychain (popular)