Crystal High Intensity Bullet 2 from Cal Exotics. Smooth, seamless, discreet bullets adorned with fine white crystals. Extended battery life: 8+ hours at low speed, 4+ hours at high speed. Intense AAA battery power. Whisper quiet. Unlimited power with incremental speed control. Luminous light with one tap shut off. Durable ABS with Metallic Plating. 1 AAA battery. 3.5"x .75"/ 9 cm x 2 cm.