Upgraded BT5.4 chip provides stable and connection, low consumption, strong anti-interference ability. Adopt 10mm graphene diaphragm, overall three-frequency equalization, more delicate details, HiFi sound quality. Game/music dual-mode, low latency, easy to switch according to your needs. Dual-channel connection, stable signal transmission, support single/binaural mode. Ergonomic semi-in-ear design, the Headphone fits ear canal, not easy to drop, comfortable to wear. Intelligent environmental noise reduction, built-in high sensitive microphone to realize clear calls. Widely compatible with most BT-enabled devices, such as mobile phone, tablet, laptop, etc. Specification: Model: TH102 Color: Black/White(optional) BT version: V5.4 Transmission distance: 10m(barrier-free) Speaker size: 10mm Frequency response range: 2.402-2.480KHz Speaker impedance: 32Ω±15% Microphone sensitivity: -42dB±3dB Signal to noise ratio: 90dB Distortion degree: 5% Port: Type-C Battery capacity: 40mAh(single Headphone), 350mAh( case) Packing list: 1 * Pair of Headphone 1 * case 1 * cable 2 * Pairs of earplugs 1 * User manual