Aiwa ESTM-30WT Ultra compact dynamic wired earphones with hands-free mobile phone description of Technical data: Compatible with all mobile devices Ultra-compact dynamic headphones with 30° ergonomic design for a secure and secure fit. Metal coating for excellent sound quality and powerful bass Neodymium dynamic speakers 10 mm driver 16 Ω impedance In-cable microphone controller Built-in special high-sensitivity microphone for clear and hands-free phone calls Highly durable transparent anti-tangle cable (1.20 m long) 3.5 mm Jack connectors, gold plated for better connectivity Frequency response 20 Hz - 20 000 Hz Sensitivity 105 pcs) Ultra light, compact and comfortable to use Weight: 13 gr Package includes spare rubber plug in 2 different sizes and a Velcro cable tie Article number: ESTM-30WT