Shure BT1 - Charging the Earphones; Specifications; Bluetooth Specifications

Shure Incorporated
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Charging the Earphones
Red LED indicates low battery.
Connect earphones to charging device using supplied cable.
LED is red while charging.
When earphones are charged, LED turns off.
Warning: Before charging, make sure the product is at room temperature, between 0 to 45°C (32 to 113°F).
Note: Use this product only with an agency approved power supply which meets local regulatory requirements (e.g., UL, CSA, VDE, CCC, INMETRO).
Specifications
Bluetooth Specifications
Antenna Information
Type = Chip
Gain = +2.13 dBi
Bluetooth 4.1
Operating frequency = 2402MHz-2480MHz
Modulation scheme = FHSS
RF power = +5.38dBm (E.I.R.P.)
Battery Type
RMCE-BT1 Rechargeable Li-Ion
RMCE-BT2 Rechargeable Li-Ion
Nominal Voltage
RMCE-BT1 3.7VDC
RMCE-BT2 3.7VDC
Battery Life
RMCE-BT1 upto8hours
RMCE-BT2 upto10hours
Total Battery Life
RMCE-BT1 120 mAh
RMCE-BT2 200 mAh