Product Name:Vibration penis sleeve    Materials: Silicone+ABS Size:  S:19.7*3.8cm L:22.5*4.2cm Frequency: 6 frequency vibration Color: Transparent   Noise Figure:≤50 dB Certificate: FDA /CE/Rohs Power supply mode: battery Function: Enlarger Package include:1 x battery 1 x penis sleeve Friendly...