Features: Ultra-soft Earbuds: Silicone ear shell, soft and comfortable to wear, perfect for side sleepers, cause no earache. 6mm Drive Unit: 6mm dynamic driver unit provides clear high pitch and thick bass, creating extraordinary sound quality. Noise Isolation: In-ear design earphone blocks ambient noise to help you focus on listening pleasure and to help sleep. Hands-free with Mic: Built-in Microphone enables hands-free calls. With in-line control, easy to control music and call. Strong Compatibility: 3.5mm plug headphones is suitable for smartphone, Tablet PC, Laptop, MP3 and other 3.5mm audio devices.