Features:Ergonomic Design: The earplugs are designed according to the shape of the ear, very mini design style, very lightweight, fit the earhook firmly, suitable for long-term wearing without causing discomfort to the ear.EASY TO USE: These earbuds for work are super easy to use. Built-in microphone, no need to take out your phone, just touch your finger, you can easily switch to pause music, answer calls, reject calls or track music. Everything is getting easier and easier.Comfortable to Wear: These are the lightest earbuds, measuring within 1 cm/0.4 inches, each sleep earbud only weighs 0.08 oz. It feels so light and natural, you will hardly notice it's there.Dual Noise Reduction Technology: Excellent physical noise reduction combined with acoustic noise reduction technology, you can enjoy a quiet sleeping time with the sleep earbuds. Staying away from snoring and baby noises.Specially designed for sleep: Ultra-miniature earbud body design, if you like to sleep with earplugs and don't like the feeling of foreign objects in your ears when you sleep on your side, then these sleep earplugs are your best choice. Sleeping on your side won't squeeze your ears, and the U-shaped rubber skin-friendly earmuffs keep the earphones close to your ears all night.LONG BATTERY LIFE & FAST CHARGING: The sleep earbuds can last 4-6 hours listening to music, and the stylish charging case can extend the usage time to 40 hours, which means the charging case can provide 7 times extra charging power for the earbuds. Micro fast charging, charging only takes 10 minutes, listening to music only takes 60 minutes.Premium Sound Quality: These sleep earbuds bring you high-quality audios enjoyment. Stereo surround sound effect, immersive music enjoyment. The perfect sleep companion.Notice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurementDescription:Standby time: about 90 hoursListening time: about 4 hoursBattery capacity: earphone 30mAh, charging box 300mAhTransmission distance: 10 meters