OPTIMUM TIME has released a groundbreaking new product.

While retaining the functionality of the best-selling OS3 series, we have added new features.

Part 1.

It's rechargeable and powered by USB . It takes up to two hours to charge, and because the power consumption when the timer isn't in use is very low, it was able to withstand 700 start sequences in testing (meaning it doesn't need to be charged for roughly six months). It's also charged by clipping it onto the outside of the case, eliminating the need to open the case and the risk of seawater getting in.

Part 2.

It has a vibration function, and the sound is hard to hear on windy sea surfaces, but when you wear it on your wrist you can hear the countdown by the vibration.

Part 3.

A full-screen countdown begins one minute before the serious race. You can't just stare at the clock, so the countdown starts in large letters on the screen, 59 seconds before the start.

remarks 

◆ Rechargeable battery provides high power and long battery life

◆ Large 68mm ABS resin case

◆ 36mm display

◆ Easy-to-read 13mm font size 

◆ Maximum font size of 23mm for the last 59 seconds

◆ The display can show the count and time simultaneously

◆ The angle can be changed by rotating it inside the case

Includes mounts for attaching to a boom or mast

◆ The strap can also be worn over the sleeve.

◆ 5 ATM water resistant/shock resistant

◆ Button layout that is easy to operate even when wearing gloves

◆ Countdown repeat mode and countdown / countup mode available

◆ ISAF Start Method 5,4,1,0 ISAF pre-programmed

◆ Pre-programmed countdown from 5 minutes to 3 minutes

◆ Counting set in 1 minute increments , ideal for match racing

◆ Equipped with a synchronization function in case the start signal is missed

Includes a USB clamp for charging

◆ Equipped with vibration alarm (if you don't want others to hear the countdown sound)