Bluetooth 5.2 strong core, no inductive delay, faster and more stable connection, clearer and smoother listening to songs and games, and generally improved headset performanceLong-lasting battery life, high performance, core power, equipped with 300 mAh large battery, super long battery life, continuous listening to music for more than 20 hours, 2-3 hours charging timePower digital display screen, real-time display, strong core supports non-inductive delay real-time digital display, control the remaining power anytime, anywhereImmersive sound effect, skin-friendly hanging neck, high-quality silicone hanging ear design, fit and comfortable for a long time without painWaterproof and prevent dirt design, easy to deal with compound outdoor and indoor environments, waterproof body + sealing components can effectively prevent rainwater from splashing and prevent dirt from damaging components360° arbitrary distortion, skin-friendly silicone, large distortion can return to the original shape, preferably non-irritating skin silicone materialDual-mode playback, support Bluetooth/card dual-mode, no need to worry about the phone being out of power and unable to listen to songsEasy to store, easy to store, easy to put in sack easy to put in the bag, easy to put in the pocket, easy to store in one rollNatural magnetic suction design, non-slip and falling off, take off the earphones and walk without shaking, the earphones are firmly adsorbed when they are closeMaterial: absSize: About 15x18cm/5.9x7.1inBluetooth version: V5.2Use mode: bluetooth/cardTransmission distance: 15 metersBattery capacity: 300mABattery life: more than 20 hoursFrequency Response Range: 128 (Hz)Impedance: 32000 (Ω)Sensitivity: 114null