High Quality NEW!!! Dimensions: 2 x 4 x 1 cm Weight: 20 g Connectivity technology: Bluetooth Form factor: In Ear Battery: Lithium 4.5V/110mAh Sensitivity: 115dB Charging time: 1.5 hrs Playtime: 7 hrs Standby time: 130 hrs Charging port: Micro USB Port Charging specifications: 5V/0.5~1A 2 sets of ear tips Ergonomic design - Comfortable ear hooks in proper hardness for snug fit which is suitable for normal size ear. Can be connected with two devices simultaneously! Up to 30ft Bluetooth range in the open space & 10ft in the obstacles space. STRONG AUDIO CHIP CSR - CSR 8640 chip; binaural surround stereo sound effect with deep bass & crystal clear treble without delay. CVC 6.0 Noise cancellation technology reduce 70% of low-frequency noise & distractions during calling. Built-in microphone; loud & clear voice during a conversation. Waterproof & Sweatproof Design - Built for active lifestyle. IPX4 & can withstand dripping sweat. Immersion up to 1m for 30 minutes underwater! Easy to Use Buttons - Allows Skip/Play/Pause on your music tracks as well as all phone use without reaching your phone. Never miss a call - Voice prompt notifications of incoming calls & phone calls, Skype video calling, Facebook, Instagram, Snapchat, WhatsApp, etc. Compatibility - Works with all kind of devices that support Bluetooth Connection, Compatible IOS Phones, other Android & Windows Phones.