These true wireless stereo earbuds deliver high-quality stereo audio offering great music listening experience and crystal clear hands-free calling with built-in mics everywhere you go. When a call comes in, the earbuds alert you by automatically reporting the call number, reliving you from worries about missing any important calls. One button design makes operation easy and fast whether to control music playback or calling. Produces high-quality stereo audio Wirelessly pair with two of wireless-enabled devices to stream music seamlessly Built-in dual mics for taking crystal clear calls hands-free Intelligent voice prompts including phone number reports Supports redialing of the last number dialed Simple multifunction button easy operation Displays battery level on iOS device Sealed in-ear construction with multiple eartip designs to block out external noise Charges via portable magnetic dock box with built-in battery and on/off switch Earbuds: Wireless Version: 4.1 EDR Play Time: 2-3 hours Talk Time: 2-3 hours Standby: about 40 hours Charging Time: 1.5 hours Battery: rechargeable 45mA li-polymer battery per earbud Operation Range: 10m/32ft Size: 2.8×2×2.8 cm/1.1”×0.8”×2.1” (L×W×H) Weight: 11g/0.38oz Charging Dock: Battery: rechargeable 450mAh li-polymer battery Charging Time: 2-3 hours Charge Times for Earbuds: 3-5 times Size: 8×6×2.8 cm/3.1”×2.4”×1.1” (L×W×H) Weight: 45g/1.59oz Package Size: 20.5×9.2×3.8 cm/8.07”×3.62”×1.5” (L×W×H) Package Weight: 114g/0.25lbs 1 × True Wireless Stereo Earbuds 1 × Portable Charging Dock 3 × Pairs of Eartips 1 × USB Charging Cable 1 × User Manual