Brand new, never used, never opened JBL Endurance Race TWS True Wireless In-Ear Sport Headphones (Black) Designed for those with an active lifestyle, the JBL Endurance Race TWS True Wireless In-Ear Sport Headphones feature a water and dustproof design that makes them ideal for working out or hanging out at the beach. They can even handle being submerged in up to 3.3' of water. With an ergonomic wing enhancer and Twistlock technology, the earbuds alleviate pressure point discomfort, while providing a secure fit during vigorous workouts.Throughout the rest of your day, you can enjoy your favorite podcasts and albums while still being able to stay connected with others. Activate Ambient Aware to better hear your surroundings, or use TalkThru to have a quick conversation with someone nearby, all without having to remove the Endurance Race earbuds. For those farther away, use the dual beamforming mics to make clear hands-free calls. All of this and more is possible all day long with up to 30 hours of total battery life with the included charging case.All-Day Battery LifeYou get up to 10 hours of battery life on a full charge, with another 20 hours available within the included charging case.Speed ChargeForgot to recharge and low on power? A quick 10 minutes in the charging case will give you up to 1 hour of playtime.JBL Headphones AppJBL's dedicated Headphones app lets you set your preferred voice assistance, adjust settings, change EQ levels, and more.Additional Features6mm dynamic drivers with JBL Pure Bass soundIntegrated controlsInteract with your mobile device's voice assistant SpecsHeadphoneEarpiece DesignIn-Ear (Intra-Aural)Driver TypeDynamicDriver Size0.2" / 6 mmImpedance16 OhmsActive Noise CancellationNoControls/Microphone LocationControls: Earpiece (Side Unspecified)Microphone: Earpiece (Side Unspecified)Full Remote OS SupportNot Specified by ManufacturerPerformanceFrequency Response20 Hz to 20 kHz (Wireless)Sensitivity97 dB SPL at 1 kHzMaximum Sound Pressure Level (SPL)92 dBMicrophoneNumber of Mics2Beamforming SupportYesNoise CancelingNot Specified by ManufacturerSensitivity-38 dBV/Pa at 1 kHzImpedance16 OhmsWireless ConnectivityWireless Modulationπ/4 DQPSK, 8DPSK, GFSKBluetooth ProfilesA2DP 1.3, AVRCP 1.6, HFP 1.7Bluetooth5.2FrequencyBluetooth: 2.4 GHz (2.4 to 2.4835 GHz)Bluetooth Transmitter Power13 dBmBatteryBattery ChemistryLithium-IonCapacity (mAh)70 mAhRuntime10 Hours (BT)Quick Charging Times10 Minutes for 1 HourRecharge Time2 HoursDC Input Power5 VDC at 1 AWireless ChargingNoneCharging PortPinsCharging CaseAdditional Runtime20 Hours (BT)Battery ChemistryLithium-IonCapacity550 mAhCharging InterfaceUSB Type-CEnvironmentalOperating Temperature113°F / 45°CPhysicalColorBlackWater ResistanceSubmersibleIP RatingIP67WeightHeadphones:0.2 oz / 6.2 g (Each)Charging Case:1.6 oz / 44.9 g