WHAT’SIN THEBOXquickstartguidehowtowearChargingS M LledbehaviorsONPairingS M LManual Controls power onRECONNECTING LEFT & RIGHTpower on & connect to device+5 S × 3L/RR L Rpower offBUTTON COMMAND1. Stereo Mode 2. Mono ModeL R×2×1×2×1×1Siri®Google AssistantBixbySeamlessautomaticswitchpoweroffL R L/Rpower on &connectTECHSPECChoose "JBL TUNE215TWS" to connect2 S×1 2 S 2 SL/R×2×1×1Siri®Google AssistantBixbySettings BluetoothBluetoothDEVICESNow DiscoverableConnectedJBL TUNE215TWS2 S 5 SL/RFirsttimeuseModel: TUNE215TWSDriver size: 6.0 mm / 0.24” Dynamic driverPower supply: 5 V 1 AWeight: 62.1 g / 0.137 lbsEarpiece: 5.4 g / 0.012 lbs / pc (10.8 g / 0.024 lbs combined)Charging case: 51.3 g / 0.113 lbsHeadset battery type: Lithium polymer Battery (55 mAh / 3.7 V)Charging case battery type: Lithium polymer Battery (660 mAh / 3.7 V)Charging time: < 2 hrs from emptyMusic playtime with BT on: 5 hrsFrequency Response: 20 Hz – 20 kHzImpedance: 14 ohmSensitivity: 108 dB SPL@1 kHz / 1 mWMaximum SPL: 95 dBMicrophone sensitivity: -30 dBV / Pa@1 kHzBluetooth version: 5.0Bluetooth profile version: A2DP 1.3, AVRCP 1.6, HFP 1.7Bluetooth transmitter frequency range: 2.4 GHz - 2.4835 GHzBluetooth transmitter power: < 6 dbmBluetooth transmitter modulation: GFSK, π/4 DQPSK, 8DPSKMaximum operation temperature: 45 °C