1、3 ADJUSTABLE LEVELS: Its design can cater to different individual needs. It allows users to customize the frequency according to their preferences, without causing any discomfort to sensitive skin. 2、MICRO CURRENT: It utilizes the 8‑15Hz ultra low frequency pulses that are in sync with the human brain, so as to help sleep/regulate the hormone secretion of mood, with this process for insomnia. 3、HANDHELD DESIGN: It operates purely based on physical principles and is held in the hand. It gradually enhances sleep quality by periodically adjusting to the body sleep habits and conditions. 4、BUILT IN INTELLIGENT CHIP: It has a 20 minute timer for calming and assisting in sleep. Its core technology ensures the device safety by providing timed protection, preventing electricity usage after falling asleep. 5、HEART SHAPED PENDANT DESIGN: Its compact size serves as both a sleep aid and a decorative pendant, allowing users to wear it comfortably and improve their sleep quality at their convenience. Item Type: Sleep Aid Devices Material: ABS Battery Type: Lithium ion (included) Battery Capacity: 210mAh 1 x Sleep Aid Device 1 x Hanging Rope 1 x Manual