DetailsSony WF-C700 Truly Wireless Headphones are compact and lightweight wireless headphones designed to fit snugly in your ear for all-day comfort. Features DSEE technology that provides high-frequency sound with Extra Bass. It flaunts an ergonomic surface design to ensure hour after hour of listening comfort and a more stable fit. The WF-C700 headphones offer stable and reliable wireless connectivity. Easy button operation lets you play, stop or skip through tracks and adjust the volume. Sony WF-C700 Truly Wireless Headphones offer IPX4-rated splash and sweat-proof construction to withstand intense conditions. These earbuds provide up to 10 hours of battery life (NC off).SpecsWeight4.6 g x 2Headphone TypeClosedDriver Unit5mmFrequency Response(Bluetooth Communication)20Hz-20000HzVolume ControlYesWaterproofYes (IPX4)DSEEYesBattery Charge TimeApprox. 1.5 hrsBattery Charge MethodUSB ChargeBattery Life (continuous music playback time)Max. 7.5 hrs (NC on) / Max. 10 hrs (NC off)Battery Life (continuous communication)Max. 5 hrs (NC on) / Max. 5 hrs (NC off)Bluetooth versionv5.2Effective Range10 meterFrequency Range2.4GHz bandProfileA2DP, AVRCP, HFP, HSPSupported Audio Format(s)SBC, AACSupported Content ProtectionSCMS-TAmbient Sound ModeYesWeightApprox. 31 gBattery Charge TimeApprox. 3 hrs (USB charging)International ModelFor international stock, shipment will take 5-7 business days to leave our overseas warehouseCompact and lightweightDSEE technologyIPX4-rated splash and sweat-proofMax. 10 hours of battery life