Uxcell Split Key Ring Pet Training Whistle, Silver Tone/Black Dog Training Whistle; Material : Metal Color : Silver Tone, Black; Whistle Size : 7.8 x 1.8cm/3.1" x 0.7" (L*D) Key ring Diameter : 1.5cm/0.6";Total Length : 9cm/3.5" Weight : 17g Package : 1 x Dog Training Whistle