50PCS Music&Sound Activated LED Bracelets White Light Bracelets Rhythmic Bracelet Glow Accessories Wedding Party

Name : LED sound control bracelet Material : Silicone Battery : 2xCR2016 (Button Batteries Include) Size : Width 2.0 cm,length 25 cm Swtich:Automatic switch ( they flash according to the rhythm of the music) Color : White Battery Include, work time about :40-60hours One size fit for adults and big kids. Package included: 50PCS LED Sound control bracelets.