The unit consists of Bluetooth chipset, memory, loudspeaker, battery A microphone and other components. btwins can be matched and connected With a mobile phone and other Bluetooth enabled devices.Product Features: * Bluetooth V4.1, Taiwan AIROHA chipset, ab-1511j, Class II * Color: Cool Black, Cyber Grey, or pink * Size of earbud: ø14.4 mm x H 16.3 mm * Working distance of less than 10 m (open space) * Bluetooth Profiles: HFP/HSP/A2DP/AVRCP * Up to 4 hours of talking time * Support the noise reduction and echo cancellation * Battery Type: Lithium Polymer Battery cp1254 A2 * Voltage: 3.7 V (under normal conditions) * Capacity: 50 mAh + 50 mAh * Up to 3 hours of audio playback time * Up to 100 hours of standby time * Power supply: stroage and charging, built-in battery 300 mAh * Can be used in pairs or as single Accessories included: The package information: * M Battery on the iOS system, including the iPhone, iPad, iPod, iMac. * A Message In English, Chinese * Multipoint: 2 phones connection SupportsAccessories included:1 x Bluetooth Stereo Headset 1 x Power Pouch (450 mAh) 3 x Sport In-Ear Hook (L, S.M.) 3 x nozzles bullet-forme (L, S.M.)3 x nozzles bowl-forme (L, S.M.) 1 x Micro USB Cable to charge the power 1 x Instruction Manual.
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