Product Name: Smart Anti-Snoring Device Rated Voltage: 3.7V External Dimension: 48mm * 22mm * 16.7mm Battery Capacity: 120mah Material: ABS + PC Working Time: about 30 Hours Product Weight: 11G/with Packaging 86G Pulse Frequency: 10hz-1500hz Rated Current: 20mA Product Color: Black Accessories List: Anti-Snoring Device * 1,USB Data Cable * 1, Ear Lanyard * 2, silicone Ear String Clip * 2, Manual * 1