Specification:Product name: Digital display TWSbinaural Bluetooth earphoneProduct model: JR-TL5Wearing mode: in-earBluetooth version: V5.0Support Bluetooth protocol: A2DP, AVRCP, HSP, HEPThe working frequency of Bluetooth: 2.402 GHz-2.480GHZReception sensitivity: -89dbmBluetooth effective distance: ..