【All For Comfortable Quiet Sleep】Hmusic HS88 sleep earbuds are designed for sleep with its unique 4mm flat thin snail shape and -30dB dual-layer noise isolation earplugs. A 6mm mini speaker is completely wrapped inside the soft silicone earplugs for pressureless comfort, friendly for both back/side sleepers. By lessening unwant noise by up to -30dB (lab-tested) and replace with gentle music, the HS88 earbuds helps people regain peaceful sound sleep. Essential for air travel or every day use. 【Anti-dropping Neckband Sleep Earbuds】HS88 sleep headphones features anti-dropping 45°ergonomic ear fins and flatten skin-friendly silicone neckband, which meets neckline curves to ensure unfelt secured fit and stays well around the neck whether you are sleeping, taking outdoor walk, doing yoga or wearing sleep mask. They stay put around your neck when you wake up another day morning, no worry of lossing your earbuds. 【12H+ Triple Long Battery Life】HS88 supports 12-hour non-stop playback for triple long-time usage(vs wireless sleep earbuds 4-5h) with single 1-hour usb-c full charge, meeting the needs of full night/day use. 【Easy Control & Hands-Free Call】HS88 Bluetooth Sleep Headphones supports dual-device connection for hassle-free switches between phone, laptop or tablets. The in-line button control panel prevents false operation (vs touch control earbuds) and much easier to adjust volume, play/pause,switch tracks or pick up calls or activate voice assitant to dial calls. The built-in microphones reduces ambient noisefor clear hands-free call any where any time. Friendly for kids, eldery and all ages. 【Clear Sound & EQ modes】The sleeping ear buds deliver detailed clear sounds with 4 equalizer modes(pop/jazz/classic/normal), allow you to customized the sound effect for different audio,eg. white noise, brainwave music, audio books to stay focus or calm our minds, to enhance learn/work performance, boost sleep and mental health by doing regular meditation. It is also a daily essential electronics for ADHD 【One Size Eartips】Please kindly noted that the Eartips of HS88 sleep earphones are only size, we designed the size for regular earsizes, it might be too small/large for someone. But since it is made of soft silicone, it is kind of comfortable for side sleeping. 【Bluetooth Connection Attention】the bluetooth range is about 10m as normal bluetooth earphones in open/unobstructed area. If there are walls/obstacles between the connection, it might affect the sound transmission. 【SLEEPING EARPHONES】Please noted that this earphones is design for sleeping, so the earbuds is smaller (4mm) than normal earbuds, which means the speaker smaller than normal ones. Therefore, the sound quality may not as good as larger speaker ones. HS88 Side-Sleep Earbuds redefine comfort with their Ultra-Soft Snail Shape Flat Thin Earbuds design. Weighing just 2 grams and crafted from liquid silicone, these 4mm flat, snail-shaped earbuds ensure zero discomfort, whether you're sleeping on your side or using them daily, great for long time usage of listening to audio book or taking a quick relaxing nap on your airplane trips. Experience unparalleled tranquility with Double Noise Isolation. The two-layered, oval-shaped silicone earplugs provide up to -30dB noise reduction (lab-tested), effectively blocking out snoring, teeth grinding, sleep talking, and other bothersome noises for a restorative night's sleep. Designed for a secure fit, HS88 Bluetooth Sleep Headphones feature 45° ergonomic anti-slip ear fins and a flat, skin-friendly silicone neckband that contours perfectly to your neckline. This ensures a secure, barely-there fit, making them ideal for sleeping, yoga sessions, or wearing with a sleep mask. Outperforming most wireless earbuds that require frequent charging, HS88 offers an impressive 12+ hours of continuous playback and fully charges in just 1 hour. Its long battery life caters to all-night use and on-the-go lifestyles. Powered by Wireless Bluetooth 5.4 technology, these sleep headphones enable seamless auto dual-device connection. The in-line button control panel, equipped with a microphone, is user-friendly and minimizes accidental presses, allowing for effortless hands-free calls and music enjoyment. Delivering crystal-clear sound, these sleeping earbuds support four equalizer modes—pop, jazz, classic, and normal. You can also play white, pink, or brown noise, along with alpha brainstorm music, perfect for enhancing focus during study or work, or simply relaxing and drifting into a peaceful sleep. The 1H sleep timer can help you turn off the headphones automatically after 1 hour, more friendly to ears, save energy and hassle for frequent charging.