Connection to mobile phone through bluetooth technology Battery lasts up to: standby 10 days - conversation 20 hours Sizes: universal Colors: black, grey, red.Etc Composition: 95% polyacrylonitrile, 3% cotton, 2% polyester Battery:4.2v/500ma Bluetooth version:3.0 Bqb available Packing:gift box 100pcs/cartons N.W/g.W:/17 /18.5 kgs Cartons size:54*30.5*57cm
