Sony WF-C510 earbuds are light, compact, and built for all-day comfort. Enjoy up to 11 hours of playtime (22 with the case), plus a quick 5-minute charge gives you an extra hour. With Multipoint Connection, Ambient Sound Mode, and EQ customization, they’re perfect for everyday listening. Experience clear vocals and deep bass with DSEE™ and Sony’s unique sound tuning for a richer, more immersive sound. Specifications: General: Earbuds Weight: 4.6g x 2 Charging Case Weight: 31g Driver Unit: 6mm Frequency Response: 20Hz-20,000Hz (44.1kHz Sampling) Volume Control: Yes Waterproof: IPX4 Multipoint Connection: Yes DSEE: Yes Ambient Sound Mode: Yes Battery: Earbuds Charge Time: 1.5hrs Charging Case Charge Time: 3hrs Method: USB Charging with Case Battery Life - Continuous Music Playback Time: Max. 8 hrs (ASM On), Max. 11 hrs (ASM Off) Battery Life - Continuous Communication Time: Max. 5 hrs Connectivity: Bluetooth V5.3 Effective Range: 10m Frequency Range: 2.4GHz Band (2.4000GHz-2.4835GHz)