New male contraceptive device works by dipping your balls in ultrasonic water - Tech
They finally did it! Ball jacuzzi Men's Birth Control Stops Sperm With Ultrasound The "testicle bath" uses ultrasound to stop "sperm mobility" and only needs to be used 'once every few months.
Teabag Your Way to Infertility with the Genital Jacuzzi - Medika Life
New male contraceptive 'testicle bath' zaps sperm (and feels like a warm bath) | The Sun
Men can prevent pregnancy by giving their testicles a bath
COSO – The new way of male contraception | James Dyson Award
Why Has the Male Reproductive System Evaded Birth Control? | Discover Magazine
Of Course there's a jacuzzi for your balls : r/ofcoursethatsathing
Male birth control shot found effective, but side effects cut study short | CNN
New male contraceptive 'testicle bath' zaps sperm (and feels like a warm bath) | The US Sun