![](img/side-circle.png)
![](img/side-circle.png)
![](img/side-circle.png)
![](img/side-circle.png)
![](img/side_arrow.png)
![](img/lineup.png)
![](img/rock01_left.png)
![](img/side_line_left.png)
![Received the Innovation Award of Yamagata Excellent Design Selection 2013.](img/excellent.png)
![jida_design](img/jida_design.png)
![In Japan: Patented: No.5315461 Design registered: No.1464103 In Taiwan: Trademark registered: No. 1648572 In USA, Europe, China: Patent applying](img/box_01_text_06.png)
![](img/rock01_right.png)
![](img/side_line_right.png)
- 2022. Jul. 25
- Media information is updated.
- 2022. Jan. 17
- Media information is updated.
- 2021. Oct. 26
- Media information is updated.
- 2021. Sep. 13
- "How to use" videos are updated.
- 2021. Mar. 08
- Media information is updated.
- 2020. Aug. 18
- Media information is updated.
- 2020. May. 12
- Media information is updated.
- 2020. Apr. 23
- Media information is updated.
- 2020. Jan. 14
- Version up tool / Customize tool for Mac are released.
- 2019. Oct. 07
- "How to use" videos are updated.
- 2018. Sep. 27
- CASIO COMPUTER CO.,LTD is appointed as IYOR 2018 official supporter.(Japanese)
- 2018. Jul. 05
- Software upgrading information and New color information are added.
- 2017. Sep. 06
- New promotion video is added.
- 2017. Sep. 06
- Media information is updated.
- 2017. Sep. 06
- Able to download all video on "How to use"
- 2017. Jul. 07
- Tapping videos are added.
![](img/rock02_left.png)
![](img/side_line_left.png)
![](img/box_02_ph_01.gif)
![Hey,look!](img/box_02_ph_01_com.gif)
![](img/box_02_ph_02.gif)
![](img/box_02_ph_03.gif)
![School of fish!](img/box_02_ph_03_com.gif)
Conversation is available even in the far distance if divers are facing each other. ※1 You can communicate not only 2 divers but 3 or more divers together. If a diver is far from you, the voice is heard smaller,
![](img/side_line_right.png)
![](img/rock02_right.png)
![](img/rock03_left.png)
![](img/side_line_left.png)
![](img/box_03_bg.png)
![](img/box_03_ph_01.gif)
![Time to finish?](img/box_03_ph_01_com.gif)
![](img/box_03_ph_02.gif)
![No, we have more time](img/box_03_ph_02_com.gif)
![](img/box_03_ph_03.gif)
![Wow, it's a turtle!](img/box_03_ph_03_com.gif)
Casio waterproof technology makes Logosease functionable even at the depth of 42meters. You can use Logosease at any depth in recreational diving, and in snorkeling in shallow water.
![](img/side_line_right.png)
![](img/side_line_left.png)
![](img/rock04_left.png)
![](img/box_04_ph_01.gif)
![We are at the bottom. How exiting](img/box_04_ph_01_com.gif)
![](img/box_04_ph_02.png)
![Let's clear the mask!](img/box_04_ph_02_com.gif)
![](img/box_04_ph_03.png)
Casio waterproof technology makes Logosease functionable even at the depth of 42meters. You can use Logosease at any depth in recreational diving, and in snorkeling in shallow water.
![](img/side_line_right.png)
![](img/rock04_right.png)
■Notices
- *1 In communication by facing divers in clear quiet sea. (Communication range is up to sea condition)
- *2 The deepest point available for recreational diving is 40 meters. This product does not encourage divers to dive up to 42 meters.
The deepest point for Advanced model (RG004) is 55m.