I've only tested the brand new item once to make sure it works. Includes: English instruction manual Strap Charging cable From the official website: Just gently hold it in your palm, and a gentle electrical stimulation will softly reach you. This gentle stimulation is like a "signal to regain your own rhythm." No need for the latest apps or complicated operations. "Nemumaru" is a device that speaks to your senses. No sound, no light, no words needed. "3 minutes" before sleep, That's the beginning of a new rhythm.