SKIN-FRIENDLY MATERIAL The earcups are made from durable and skin-friendly leather and memory foam cushions. It wraps tenderly and firmly over your ear which makes you feel no pressure. FOLDABLE DESIGN The foldable design greatly increases the flexibility of storage, making the headphone overall smaller and easy to take out MULTIFUNCTIONAL BUTTONS, EASY TO OPERATE Switching songs, adjusting volume,pausing/playing, answering/rejecting calls can all be done by pressing buttons, no longer need to take out phone frequently. OVER-EAR DESIGN The streamline of the neckband fits the arc of the shoulder and neck, making it light weight and comfortable for all-day wear. 40MM PREMIUM HIGH-FIDELITY SOUND Built-in 40mm large dual-core dynamic speaker, high-resolution restores every sound detail. LONG BATTERY LIFE Built-in 500mAh ultra-large capacity re-chargeable battery, can play 36 hours on a single charge. Specifications Version:V5.3 Type-c port Net weight: 225g Wireless working range: 10M(without obstacles) Speaker: Ф40mm Battery:500mAh Play time: 36Hours Talk time:35Hours Speaker sensitivity:108+3dB Impedance: 320 Charging time: 2.5hours Frequency response: 20Hz-20KHz Input voltage:5V/IA Function: Bluetooth,TF card,FM.AUX Product size: 196*182*82mm