Bluetooth SIN CABLE Headphone with built-in microphone Account with button to attend calls. Battery capacity: headphones: 40 mAh x 2 Charging case capacity: 300 mAh Weight: case: 41 g Headphones: 3.5 g x 2 Game time: 4h Headset loading time: 1.5 h Input current: DC5V/1A Speaker diameter: 13 mm x 2 Interface: Bluetooth V5.1 Scope: 10m (without obstacles) iOS