Music is clear and no noise: equipped with customized high-fidelity speaker sound effects and powerful active noise suppression, let you hear pure music Extraordinary workmanship: high gloss paint shell with elegant classic colors, simple and elegant, luster for the eye High-quality eco-friendly leather hood ensure there is no pressure when listening for a long time No pressure, skin-friendly and soft: high-quality sponges are applied to the ears strong sound insulation and transmit compact bass to the ears Adopt high sensitivity microphone: it can be rotated within a range, sound is bright, and it can easily have wireless and smooth new sound transmission Supports 40mmHD drive unit with high resolution audio, which can express treble over audible range up to 100KHZ With a battery capacity of 300mAh, normal calls can reach 8-10 hours, and music can reach 4-6 hours Specifications: Bluetooth version: V5.0 Transmission power: Class2 Frequency range: 2.4-2.48GHz  Working distance: 10 meteres  Charging time: 3 hours  Talking/Playing music: about 8 hours  Battery: 300mAh