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COSO is a male contraception ultrasonic 'testicle bath' device
Why Has the Male Reproductive System Evaded Birth Control? | Discover Magazine
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.
An Experimental Male Birth Control Pill Was 100% Effective. It's About Time. | The New Republic
New male contraceptive 'testicle bath' zaps sperm (and feels like a warm bath) | The Irish Sun
Male contraceptive testicle 'bath' device wins Dyson award - NZ Herald
New male contraceptive device works by dipping your balls in ultrasonic water - Tech
Teabag Your Way to Infertility with the Genital Jacuzzi - Medika Life
Testicuzzi - Testicle Hot Tub – testicuzzi
New male contraceptive 'testicle bath' zaps sperm (and feels like a warm bath) | The Sun
Male birth control shot found effective, but side effects cut study short | CNN
Is Steeping Your Balls the Future of Male Birth Control? - InsideHook