Battery:2 x LR44 Already contained
Volume: less than 30db
Warm Prompt: This product is suitable for over 18 years old adult use only
Button Function Description: Internal settings switch to open or close the slide
100% safe, non-poisonous and no odour.
Material: Medical silicone
Quite soft, smooth, emulational skin design and nice touch feelings.
Small, cute, easy to carry and use.
Waterproof: external waterproof