Feature: 1. The hard-core Bluetooth-compatible 5.2 chip rejects the Cardboard delay built-in high-resolution decoder, making the signal stronger and farther, high-speed transmission, and zero delay for playing games and watching movies. 2. And the adjustment angle is no longer limited. Product name: Bluetooth-compatible Headset Type: V13 Bluetooth-compatible Headset Bluetooth-compatible version: version 5.2 Bluetooth-compatible distance: about 10 meters Headphone battery: 300MAH Charging compartment battery: 2200MAH Listening to songs, talk time: about 68 hours Charging time: about 2 hours Universal for left and right ears, rotatable Battery Type Lithium Polymer Battery Support protocol HEPHSPA2DAVRCP Process material ABS + electroplating + food silicone ear caps Frequency: 20Hz-20KHz Impedance is 32 ohms sensitivity 85dB/mW IPX 5 waterproof rating V13 packaging size: 18x8.5x3CM Single headset weight: 14.3G V13 complete package weight: 52G V13 with charging compartment size: 20x11x4CM Charging compartment size: 9x8x3CM Weight of charging compartment + earphone: 122G Weight of V13 complete set: 173G Packing list: 1 x Bluetooth-compatible headset / (Bluetooth-compatible headset + charging bin) 1 x charging line 1 x instructions 1 x carton Note: The color deviation is subject to actual system configuration and slight dimension difference is allowed due to manual measurement.