Sony Wireless Neckband Speaker SRS-NS7 Wearable Neck Speaker Specifications Speaker Speaker Type Full Range Net Type Fabric Material, Structure Fabric & Mold Input Terminals - Power Lithium-ion Battery Battery Capacity 2900mAh Power Type DC Voltage/Frequency 5V DSEE ● USB Type-C ● Auto Power OFF ● Built-in Battery ● Continuous Usage Time Approximately 12 hours *1 Charging Time Approximately 4 hours *2 Maximum External Dimensions (Width x Height x Depth) Approximately 244mm x 53mm x 185mm Weight *3 Approximately 318g Wireless Specifications Communication Method Bluetooth Standard Ver. 5.0 Output Bluetooth Standard Power Class 1 Maximum Communication Distance (m) Approximately 30m Operating Frequency Band 2.4GHz Modulation Method FHSS Supported Profiles (A2DP) ● Supported Profiles (AVRCP) ● Supported Profiles (HFP) ● Supported Profiles (HSP) ● Supported Codec (SBC) ● Supported Codec (AAC) ● Supported Codec (LDAC) ● Supported Content Protection SCMS-T Transmission Band (A2DP) 20 Hz - 20,000 Hz (at 44.1 kHz sampling) Hands-free ● iAP over Bluetooth ● Microphone Type Electret Capacitor Directivity Omnidirectional Transmitter Transmission Frequency Band 2.4GHz band Reach Approximately 30m Input Terminals Optical Digital Audio Input Terminal (Square) (limited to PCM of fs=48kHz) x 1 Power DC Maximum External Dimensions (Width x Height x Depth) Approximately Φ58mm x 23mm Weight Approximately 29g Charging Stand Power - Maximum External Dimensions (Width x Height x Depth) - Weight - Other Accessories USB Type-C (R) Cable (2), Wireless Transmitter (1), Optical Digital Cable (1) *1 Playback time when using our specified sound source and setting the volume of this unit to Vol. 16. Playback time may vary depending on the volume, music, ambient temperature, and usage conditions. *2 Built-in battery charging time (when connected to a USB AC adapter with an output current of 1.5A or more at an ambient temperature of 5-35°C) *3 Includes the main unit battery