Specification Dimensions:3.03 in * 1.57 in * 5.31 in Weight:0.1900 lb Available Ship to:United StatesDetails *Features*: **True Wireless and Total Ear-fit*:Ture wireless dual ear stereo design,left and right earbud can be separated,that is,you can use its left and right ear headset solely(Single Track Mode),also can used them in pairs(Stereo Mode). Ultra Mini Size(its diameter is only 20mm),and its ergonomic design guarantees 100% Stable and Comfortable(includes S/M/L-sized ear tips) when walking,exercising,running,climbing,driving,skating,cycling,etc. **Crystal Clear Stereo Sound Effect*:Latest Wireless Technology with A2DP/ AVRCP supported,ensure transmitting strong signal in high quality and high speed and offering impressive stereo music. Adopts CVC6.0 Noise Canceling Technology and high-sensitivity microphone to reduce ambient noises and grasp the detail of voice,enabling clearer sound from microphone. **High-effective Magnetic Charging*:Simply put your earbuds near the charging interface and they will be held in place magnetically and recharge. The included 300mAh charging box can charge the two earbuds about 3 times,keeping you enjoying music all day without any worry for low battery. **Up to 15 Hours Stereo Audio and 30 Hours Single Experience*:Get 5 hours from a single full charge,then prolong that to 15-Hr with the included charging case. Take the one earbud for single mode and leave the other earbud charging,extend music playing time from 15 hours to about 30 hours. **IPX4 Waterproof and One-Key Operation*:Enjoy Music Freely in outdoor thanks to its IPX4 waterproof design. And its one-key operation design,simply and quickly fulfill almost all functions with one multi-functional button like answer/end a phone,play/pause,pairing,power on/off,etc. *Specifications*: Waterproof: IPX4 Frequency Response: 2.4GHz Sensitivity: -38db Mic Driver Unit: φ7mm Transmission Range: ≤10m/32.8ft Standby Time: one for 120 hours, a pair for 60 hours Working Time: one for 5 hours, a pair for 2.5 hours Charging Time: 1 hour Earbuds Battery Capacity: 3.7v, 55mAh li-polymer rechargeable battery Charging Case Battery Capacity: 3.7v, 300mAh li-polymer rechargeable battery Diameter of Per Earbud: about 20mm Charging Cable Length: 97cm/38.18inches Material: silica gel (wingtip), ABS plastic (charging dock) Size of Charging Case: 4.9x3.2x3.6cm/1.93'x1.26'x1.42' (LxWxH) Weight of Per Earbud: 4g/0.15oz *Package Lists*: 1 x Pair of Wireless Earbuds 1 x Charging Case 1 x USB Charging Cable 1 x Pair of Small Size Earcaps 1 x Pair of Large Size Earcaps 1 x User Manual