Top Roundups

Travel & Mini Vibrators

14 of the best mini vibrators for discreet yet powerful pleasure
Read

Strokers & Interactive Rings

From hands-free orgasms to fully-interactive sync
Read

Sound-responsive Toys

Music-activated vibrators for syncing with music or audio porn
Read

Rabbit Vibrator Guide

How to use a rabbit vibrator & some hare-raising history
Read

Empowering Accessibility

10 impressive sex toys for people with disabilities
Read
Top 5 Strokers & Rings Reviews
  • 8.2
    Lee Bell
  • 8.1
    Ben
  • 7.6
    Ben
  • 7.5
    Lee Bell
  • 7.3
    Alex P
Top 5 Vibrator & Kegel Reviews
  • 9.1
    Oli Lipski
  • 8.6
    Kirsty J
  • 8.5
    Almaz O
  • 8.4
    Kirsty J
  • 8.3
    Amy Norton
Categories & Topics
Top Roundups

Adult Android Apps

Best Free Genuine Porn Apps for Android
Read

Interactive Cams

9 Best Cam Sites for Tip Control and Interactive Toys
Read

VR Porn Sites

23 Free and Premium XXX Virtual Reality Sites
Read

Gay & Trans VR

Best Gay & Trans VR Porn Sites Reviewed and Rated
Read

Chromecast Sites

How to Cast Adult Videos to your TV (and the Best Sites)
Read

Meta Quest Guide

Meta Quest 3 Porn Guide: Unissable VR & AR Passthrough Experiences
Read
Popular Posts

Kink + Tech =

Safely Explore your Erotic Edges with BDSM Tech
Read

Privacy 101

Keep your Browsing and Other Online Activity Private
Read

Sex Robots 101

Everything you Need to Know About Sexbots
Read

Queering Adult Content

Recategorizing Porn for the Ethically-curious
Read

From JenniCam to Chaturbate

A (Brief) History of Adult Camming
Read

AI Ethics

Ethical Dilemmas of AI in Sextech
Read
Categories & Topics
Imagine

AI Girlfriends

AI partner apps that send explicit selfies and videos
Read

AI Generators

5 Best Image & Video Generators for Making Fantasy XXX content
Read

AI Erotica

6 Best AI Erotica Story Generators for Co-creating Fantasies
Read

Audio Porn

7 Best Audio Porn and Audio Erotica Apps
Read

DIY Sextech?

How to Get Started in Sextech Hacking
Read

From Replika to sex-mad Allie

Why Do People Connect with Romantic AI Chatbots?
Read
Categories & Topics
Popular Posts

Camming

How to make money as a new cam performer
Read

Fan Platforms

6 Best Alternatives to OnlyFans for Adult Creators
Read

Write for Us

We Pay All Our Writers & We Never Post Sponsored Articles or Paid Links
Read
Categories & Topics
Newsletter
Contact

Lightbulb moment? Wearable Kaisar LED penis ‘horseshoe’ claims to increase sexual performance

1
Jamie F
Updated March 25, 2024
Published March 25, 2024
We may earn a commission via links on our site.
Why?

A wearable that fits around the penis, claimed to be the first men’s healthcare device to use photobiomodulation therapy (PBMT), has been launched along with claims that it improves sperm count and mobility, plus erectile function.

The Kaisar is a horseshoe-shaped gadget that sells in the US for $239 and features 40 LED lights, to administer PBMT, also known as LED or light therapy.

PBMT can also be known as low-level laser therapy, and has been used for pain relief and to reduce inflammation. Its mechanisms are still not fully understood by the scientific community, although recent studies have shown that it can improve the movement ability of sperm.

A 2023 study called Effects of Photobiomodulation Therapy on Human Sperm Function, published in the National Library of Medicine, found that research participants who received PBMT had sperm with significantly increased motility. The study concluded that PBMT was an “efficient” way to improve sperm function.

You use the Kaisar by wearing it over your penis for 15 minutes per day, exposing your genitals to its LEDs. The device is 96 millimeters at its longest section and weighs 104 grams.

The Kaisar company, which is based in South Korea, told SEXTECHGUIDE that research it conducted in 2023 showed that mice given controlled exposure to the device’s LED technology showed increased sperm motility and blood flow, compared to control group mice.

This improved blood flow led to claims that the Kaisar can increase erection function in humans, based on better blood flow meaning a harder penis. However, Kaisar is yet to test the product on humans in large research trials, which would be required to ascertain whether it is indeed “the solution for your sexual complaints”, as the firm claims it to be.

Snug as a bug: The Kaisar fits over the penis

Still, attempting to utilize PBMT in a home-use device is an interesting development, and the company says it will conduct further research.

Some men who have had PBMT in medical settings have previously reported improvements in their erections and their sexual desire.

Generally, medical professionals agree that more research into PBMT in general is required to understand its effectiveness for sexual issues – whether it’s administered using a wearable device or in a hospital.

Article by
Jamie F is a freelance writer, contributing to outlets such as The Guardian, The Times, The Telegraph, CNN and Vice, among others. He is also the creative force behind the Audible podcast Beast Master.
Get in touch
On the same topic…
  • 12 best rabbit vibrators

    12 best rabbit vibrators with next-gen tech for mind-blowing dual stimulation

    Saasha G/
    March 7, 2025
  • fleshy x3

    Fleshy X3 syncs manual strokers with interactive content and devices using AI

    Jamie F/
    February 27, 2025
  • facebook sexual health censorship

    Fears about Meta censoring women’s health content under Trump regime

    Jamie F/
    February 12, 2025
By the same author…
  • vrchat

    VRChat update brings desktop ‘selfie cam’ mode and drone FPV view

    Jamie F/
    March 13, 2025
  • Lelo F2S

    Lelo F2S penis stroker adds AI for stamina and pelvic floor training

    Jamie F/
    March 13, 2025
  • ai kissing apps

    Rise of AI kissing apps creates tangle of ethics issues

    Jamie F/
    March 12, 2025

Leave a Reply

Your email address will not be published. Required fields are marked *