Screaming O Size 4LR44 Batteries. A new battery for 4B and 4T Bullet Vibrators. New and improved battery with longer lasting power. Introducing the new and improved 4LR44 batteries to power our new line of bullet vibes! These child safe batteries are more reliable and longer lasting for your pleasure. We have switched to new and improved 4LR44 batteries to power our new line of bullet vibes. In addition to being more reliable and long lasting for your pleasure, they are child-safe and require fewer units to power the products therefore adding less waste to the landfills. Features: more reliable and long lasting. Child-safe. Non-choking hazard. 4B low pitch Bass. 4T Pink High Pitch Treble. Categories: Vibrators, Sex Toys for Couples, Sex Toys for Men, Health and Beauty Aids, Sex Toys for Women, Batteries, Storage, Odds and Ends. 2023.