JBL Pure Bass SoundWireless Bluetooth 5.0 StreamingUp to 40H battery life and speed charge (5mins = 2H)Multi-point connectionsHands-free callsLightweight, comfortable and foldable designAsk Siri or Hey GoogleTechnical specifications: Driver size: 32mm/1.26" Dynamic driverPower supply: 5V 1AWeight: 160g/0.35 lbsHeadset battery type: Lithium-ion battery (3.7V/450mAh)Charging time: 2 hrsMusic playtime with BT on: up to 40 hrsFrequency response: 20Hz – 20kHzImpedance: 32 ohmSensitivity: 103.5dB SPL@ 1kHz 1mWMaximum SPL: 95dBMicrophone sensitivity: 29dBV@1kHz/PaBluetooth version: 5.0Bluetooth profile version: A2DP v1.3, AVRCP v1.6, HFP v1.7Bluetooth transmitter frequency range: 2.4GHz – 2.4835GHzBluetooth transmitted power: