About Product:Brand: 837B item No.: 837B model: 837B material: ABS specification: OPP adapter battery: ordinary dry cells applicable occasions for gifts: opening ceremony, anniversary celebration, advertising promotion, festival, wedding, housewarming, birthday, business gifts, other printed LOGO: can be processed custom: Yes product type: arithmetic calculator whether the voice function is supported: no display digit: 12 with battery or not: no net weight: 115.3(g) imported or not: no color: black whether cross-border supply: no