Size ●: 10 × 20 mm There are some differences one by one for all manual formation. ● Included: 1 needlepoint dropper each ● Stainless steel (alloy) chain Length about 43.5 cm (about 38 cm + adjuster 5.5 cm) Adjustable length allows adjustment with adjuster There is a small glass ball on the end parts. Material: Borosilicate glass (borosilicate) It is a beautiful special glass that can be said to be an artificially crystallized gem of 80% of the same composition as quartz. Compared to general glass, "light" "high transparency" "hard to break" is a material that is suitable for accessories and molding with the nature. ~ A reward for yourself and a gift for loved ones ~ [Structure] Has excellent functionality that does not spill structurally at all. Some small holes are open, but “The liquid inside the structure does not spill out adopts the original idea” We will confidently provide the completeness of the original idea and technology. I will. I hope you like it and use it. [Effect] Depending on the type of aroma oil (essential oil), it can be expected to be effective in preventing dementia and preventing hay fever. [Use] Please put favorite oil or perfume with attached dropper and use. I smell gently at body temperature. [Washing] If you want to wash the inside can be washed with absolute ethanol (purchased at the pharmacy). By using the attached dropper, you can wash the inside and the dropper at the same time. [Others] The flavor varies depending on the type of fragrance / ambient temperature / body temperature, but the essential oil usually lasts from 1 to 2 drops for half a day to 1 day. It has a small vent and is slightly scented. Perfume / Aroma oil as well as oxidation and change in aroma, there is a risk of adverse effects on the human body Please enjoy the fresh aroma daily without putting more than necessary. [Caution] Do not use phototoxic essential oils such as citrus fruits and parts of the Seriaceae family. In addition, please carefully check the nature of the flavor and use it.