Specifications： Polar pattern : Uni-directional Frequency Response :20Hz-20kHz Sensitivity :-32dB ±2dB Max.SPL:120dB Signal to noise ratio : 10dB Sampling rate :192kHz/24bit Cable length : 2.5m Power supply : USB DCSV power supply Plug :USB

Specifications： Bluetooth version: 5.3V Bluetooth Chip: JL7003 Frequency Response: 20Hz---20KHZ Bluetooth Summary: A2DP / HFP / HSP / AVRCP Type of Battery: Lithium-Battery

Specifications : Driver Unit:50MM Maximum Output power : 50MW Impedance: 32 Ohm±15% Sensitivity: 110±3dB Microphone sensitivity :-42±3dB Cable length :1.8M Jack : 3.5mm golden plated Plug : 2*3.5mm +USB for Led light With volume control

Specifications : Bluetooth version: 5.3V Bluetooth Chip: JL7003 Frequency Response: 20Hz---20KHZ Bluetooth Summary: A2DP / HFP / HSP / AVRCP Type of Battery: Lithium-Battery

Bluetooth: V5.0 Bluetooth profiles: A2DP/HFP/HSPIAVRCP Range: 10~15 meters Play Time: 4 hours + 12 hours Standby Time: 100 hours Charging Time: Approximately 1hour Battery Capacity: 40mAh(each) Dimension : 15Wx25Lx20H(mm) Weight : 4.3g (each)

Specifications : Wireless Version:5.3 Battery Capacity: 800mah Frequency Range: 20Hz-20kHz Working distance: 10-15m Charging socket: Type-C Operation frequency: 2.4G Mic. Sensitivity: 42 ± 3dB (1KHz) Charging voltage: 5V Charging currency: 200MA Full charging time: 6Hours Working time: above 40 hours maximum volume

Specifications : Frequency range : 20Hz-20KHz Impedance : 16Ώ Speaker sensitivity : 95±3dB Microphone sensitivity : -38±3dB Speaker diameter : 10mm Plug : USB-C Cable length : 1.2m With volume control

Specifications : Color : Black Polar pattern : Cardioid Power Supply : USB DCSV power supply Cable length : 1.5m Headphone output : 3.5mm Recording interface : 3.5mm Tone arm : capacitive Frequency : 30Hz-20Khz Reverberation model : sound reverberation of the echo

Speaker:Φ50mm Impedance:32Ω ±15% Frequency Response: 20Hz-20 kHz Cable Length:2M±0.1M Rated power:10mw Max input power:20mw Plug type:Φ3.5mm*2+USB Mic dimension:Φ4.0*1.5mm Directivity:noise canceling Sensitivity:-40DB±2DB

Specifications Polar pattern : Uni-directional Frequency Response :20Hz-20kHz Sensitivity :-32dB ±2dB Max.SPL:120dB Signal to noise ratio : 10dB Sampling rate :192kHz/24bit Cable length : 2.5m Power supply : USB DCSV power supply Plug :USB

Specifications : Heavy Duty Robust Headset with microphone and volume control Driver Unit : 40mmΦ Sensitivity : 95±3dB Frequency Response : 20Hz-20KHz Impedance : 32Ω±15% Cable : Nylon Braided Plug : 3.5mm golden plated Cable length : 2.2m

HP903BT

Specifications : Bluetooth version: 5.3V Bluetooth Chip: JL7003 Frequency Response: 20Hz---20KHZ Bluetooth Summary: A2DP / HFP / HSP / AVRCP Type of Battery: Lithium-Battery

Specifications : Bluetooth version : V5.3 Different colors available 1.Bluetooth profile :ACRCP1.3/A2D1.0/HFP1.5/HSP1.0 2.Working distance : above 10m(Free space ) 3.Battery : 300mAh Lithium Battery 4.Music time : above 10 hours 5.Charging time : above 2 hours 6.Sensitivity : 105dB±3dB 7.Frequency response : 20-20kHz 8.Mic. sensitivity :- 42dB±3dB 9.Mic. Frequency response : 100-

Specifications : Driver Unit:50MM Maximum Output power : 50MW Impedance: 32 Ohm±15% Sensitivity: 110±3dB Microphone sensitivity :-42±3dB Cable length :1.8M Jack : 3.5mm golden plated Plug : 2*3.5mm +USB for Led light With volume control

Bluetooth version: 5.3V Bluetooth Chip: JL7003 Frequency Response: 20Hz---20KHZ Bluetooth Summary: A2DP / HFP / HSP / AVRCP Type of Battery: Lithium-Battery