Waters in Chinese / Japanese...

沃特斯 is the name Waters in Chinese (Mandarin).

ウォーターズ is the name Waters in Japanese Katakana.

Note: Because this title is entirely Japanese Katakana, it should be written by a Japanese calligrapher.

川 means river or stream in Chinese, Japanese Kanji, and old Korean Hanja.

In Japanese, this can be a surname when pronounced as Sakigawa.

江 means large river in Chinese, Japanese Kanji, and old Korean Hanja. This generally refers to a river big enough that it's navigable by cargo boats, passenger boats, or small ships.

In Japanese, this can be a surname when pronounced as Minkou or just Kou.

水の心 is the Japanese Buddhist and martial arts phrase, “Mizu no Kokoro,” which means “mind like water” or “heart of water.”

The phrase is a metaphor describing the pond that clearly reflects its surroundings when calm but whose images are obscured once a pebble is dropped into its waters.

玄龍 is a sophisticated or scholarly way to say “Black Dragon.”

玄龍 is the title you'd expect in ancient Chinese literature.

The first character means black or mysterious.

The second character means dragon.

This black dragon represents a king dwelling in the depths of the mystic waters.

寧靜致遠 is an ancient Chinese idiom that means “tranquility yields transcendence.”

This suggests pursuing a quiet life of profound study.

The first two characters mean tranquility. The last two characters mean “go far,” which suggests achieving much in your life or expanding beyond normal limits. The direct translation would read something like, “[With] tranquility [in your life, you'll] go far.”

Compare this to the English idiom: Still waters run deep.

In Japanese, 無心 means innocent or without knowledge of good and evil. It literally means “without mind.”

無心 is one of the five spirits of the warrior (budo) and is often used as a Japanese martial arts tenet. Under that context, places such as the Budo Dojo define it this way: “No mind, a mind without ego. A mind like a mirror which reflects and dos not judge.” The original term was “mushin no shin,” meaning “mind of no mind.” It is a state of mind without fear, anger, or anxiety. Mushin is often described by the phrase “Mizu no Kokoro,” which means “mind like water.” The phrase is a metaphor describing the pond that clearly reflects its surroundings when calm but whose images are obscured once a pebble is dropped into its waters.

This has a good meaning in conjunction with Chan / Zen Buddhism in Japan. However, out of that context, it means mindlessness or absent-mindedness. To non-Buddhists in China, this is associated with doing something without thinking.
In Korean, this usually means indifference.

Use caution and know your audience before ordering this selection.

More info: Wikipedia: Mushin