inG. TBS31K BLACK #Tama Denki Kogyo #inG_ Connection type: Wireless Structure: Sealed ■Bluetooth Earphone Specifications ・Communication method: Bluetooth 4.1 ・Maximum communication distance: Approximately 10m (Class 2) in clear line of sight ・Supported profiles: HSP/HFP/A2DP/AVRCP ・Pairing: Up to 8 devices can be registered ・Passkey (authentication code): 0000 (four zeros) ・Built-in battery: Lithium-ion polymer battery ・Charging time: Approximately 1.5 hours * ・Continuous talk time: Up to approximately 2.5 hours * ・Standby time: Up to approximately 80 hours * ・Music playback time: Up to approximately 2.5 hours * ・Size (per side): Approximately W17 x H23 x D23.5mm ・Weight: Approximately 4g ・Material: ABS, etc. ■Charging Cradle Specifications ・Built-in battery: Lithium-ion polymer battery ・Charging time: Approximately 2 hours * ・Earphone charging times: Up to approximately 2 times * ・Size: Approximately W69 x H29.5 x D31mm ・Weight: Approximately 30g ・Material: ABS, etc. ■USB Cable Specifications ・USB connector: USB A connector/microUSB ・Cable length: Approximately 30cm ・Cable rating: DC5V/1A ・Weight: Approximately 15g ・Material: PVC, etc.