After using it for one night, I slept two hours more last night and slept until 5 o'clock, and the effect is very good.
Thought it wouldn't work, But indeed yes that help to sleep best.
Further arrived very quickly to Spain.
Small and exquisite, it helps you sleep well, and has a long battery life. After using it for a few days, the quality of sleep has improved a lot.
Received the product, not used before, consulted the seller, used for two days, the product is effective, small and exquisite, easy to use,