Portable Bluetooth headphones - HOCO Promise W25. They provide high-quality, clear sound with deep bass. Foldable design makes it easy to carry and store the headphones in a bag or backpack. Bluetooth wireless transfer allows you to enjoy your favorite music in excellent quality without a cable. Foldable design makes it easy to carry and store the headphones in a backpack or a bag. Comfortable earmuffs allow you to listen to music for hours without feeling uncomfortable. Adjustable - the headphones can be easily customized to the individual needs. Built-in button allows you to control the sound being played. Equipped with a TF card slot and AUX input. Specification: Speaker: 40 mm Bluetooth version: V5.0 JL Supporting protocols: A2DP, AVRCP, HSP, HFP Charging voltage: DC 5V Charging time: approx. 2.5h Connection / music time: 12h Standby time: 200h Battery: polymer class A Capacity: 300 mAh Size: 180 * 150 * 70 mm Weight: 161g