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Joyroom JR-D7 Bluetooth Neckband Specifications:  100% genuine productBendable and convenient storageBattery capacity: 2.105 mAhBluetooth version: 5.04 HD sound qualityEasy take on and take offEffective connection: 10 meterCVC digital technology2 in 1 features( connect 2 phone together) ..

 My Power MY-111b Bluetooth Earphone Specifications:Neck band style 6hr backup 10mt working distance 130 mah battery..