If your partner is not available, this trainer can accompany you. Put enough lubricant on your glans. The particles wrap around your glans, activate every nerve ending, stimulate the coronary sulcus. It can effectively exercise penis endurance and prolong ejaculation time. The vibrating eggs providing powerful vibration stimulation, and your glans is sandwiched in the middle, forming a pleasure of being squeezed.Specifications and characteristics:- Penis Trainer with 20 speed Vibrators- Material: TPE + ABS- Vibration: 20 Speeds- Batteries: 2 x AAA ( NOT INCLUDED )Packaging: Cardboard Display BoxCertificate: CE