Search term: In Ear Earphone, HIFI Sport Earplug, headset Headphone For Mobile Phone Features: Beautiful sound quality. It could be great gift for your friend, family, etc Small and portable, you can enjoy music wherever you want. Professional division of physical frequency quality tuning technology. Congenital advantage, the experiece is really HIFI. Description: Type: earphone Brand Name: KZ Style: In-Ear Line Length: approx 1.2m3cm Resistance: 16 Communication: Wired Waterproof: No Shape Type: L Bending Sensitivity: 108dB Connectors: None Function: Common Headphone, For Mobile Phone, Portable, Sport, Supports music Vocalism Principle: Hybrid technology Frequency Response Range: 18-22000Hz Model: KZ ZST Earphones Type: Sports earphones Use: Portable Media Player Connectors: 3.5mm Specification: Color: black Type: without microphone, with microphone Dimension: 30x70x100mm Package Included: 1 x KZ ZST In Ear Earphone with 1BA Hybrid Drive HIFI Earphone Running Sport Earphones Monito Earphone Earplug Headset