Material: ABS + SiliconeBluetooth version: 5.1Connection range: up to 10 metresSpeaker diameter: 10 mmSpeaker resistance: 32Speaker sensitivity: 1103dBSpeaker frequency: 20Hz~20KHzSignal-to-noise ratio: >70Earpiece weight approximately 3.5gBattery capacity: 35 mAhPlaying time: approx. 5 hoursTalking time: approx. 5 hoursCharging time: approx. 1.5 hoursCase weight: approximately 28 gCase battery capacity: 300 mAhCase charging time: approximately 1.5 hoursCase charging input: 5VStandby time: approximately 25 hoursCase size: 60.3 x 45.5 x 28.2 mmCompatibility: for Apple/Android devices with Bluetooth function