Ø53mm large diameter drive unit High-resolution audio drive unit with high magnetic flux magnetic circuit Double-rimmed vibrating structure provides double-layer cushioning material for comfortable wearing Airflow low-frequency air hole system optimizes air elasticity, greatly improving sound quality https://i.imgur.com/4AZgWft.jpg 【Product specifications】 Type: closed moving coil type Connection socket: Ø3.5mm stereo mini socket Drive unit: Ø53mm Connection plug: Ø3.5mm gold-plated stereo mini plug (straight type) Output sensitivity: 100dB/mW Input plug: Ø3.5mm gold-plated stereo mini plug (L type) Frequency response: 5~40,000Hz Weight: about 281g (without wire) Maximum withstand power: 1000mW Wire: 1.2m (Y type ※) ※ The length of the left and right wires Impedance: 38Ω ● Accessories: Headphone cable (1.2m / Ø3.5mm gold-plated stereo mini plug / L type), carrying the package ● Replacement ear pads (sold separately): HP-WS1100 [Product Warranty] Non-human damage to the original factory warranty for one year [Returns need to know] 1. According to the Consumer Protection Law, consumers are entitled to the seven-day appreciation period of the goods (the non-trial period of the appreciation period) Headphones are classified as personal hygiene products. They should be purchased as they are unpacked. Be sure to think twice before ordering or unpacking, so as not to affect your rights. 2. The return limit is brand new and unopened. 3. In case of new products, please inform the customer service to handle it for you. 4. For new products, please keep the outer packaging and contents and accessories intact. If the packaging carton is dirty or severely torn, it cannot be restored. Or the accessories are missing and cannot be exchanged. 【Precautions】 1. Bluetooth headset related time varies depending on personal use, phone settings and ambient/temperature 2. Due to differences in computer screen settings and personal perception, the product images of this store are for reference only, subject to the actual product received. 3. If the product specifications are incorrect, they will be based on physical objects. 4. Please follow the operation instructions and precautions in the product manual before use. 5. If there are any errors in the above specifications, the information published by the original factory shall prevail.