Dear Customer: Hello! Welcome to Sunshot!The following is information about this product
Features:

Upgraded BT5.3 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: GM2 ProColor: Black/White(optional)BT version: V5.3Transmission distance: 10m(barrier-free)Speaker size: 10mmFrequency response range: 2.402-2.480KHzSpeaker impedance: 32??15%Microphone sensitivity: -42dB?3dBSignal to noise ratio: 90dBDistortion degree: 5%port: Type-CBattery capacity: 40mAh(single Headphone), 350mAh( case)
Packing list:
1 * Pair of Headphone
1 * case
1 * cable
2 * Pairs of earplugs
1 * User manualHope you enjoy this product and bring him home! If you like it, please give us a five-star review! Your support is our greatest motivation! We will work harder to create more and better products and continue to update!?Thank you!?Have a great life!