Output power: 1KHz THD10% 1 USB device capabilities: for this charger.

Frequency response: 170Hz ± 20kHz 2 play TF card, supports MP3 format songs

Speakers: 4 ω 3W 3 Bluetooth connection playback

S/n ratio: ≥ 82DB 4 [FM radio digital radio]FM, radio memory play.

Lithium battery: lithium 3.7~4.2V 3.7~4.2V 650mAh 5 built-in 650mAh (can be customized)

Color: four color option (customizable) 6 total working time is approximately 6 hours

Material: silicone ABS+ 7 rated charging time: about 5 hours

Distortion: ≤ 0.5% 8 rated power: 3W

Bluetooth connection distance: ≥ 10.9-meter working voltage: 3.7V~4.2V

Dimensions: 146*54*31mm 10 charging voltage: 5V DC

Item weight: 300 g 11. Bluetooth hands-free phone calls

Waterproof grade: IP65 12. Finally a dial out call call-back function

Accessory carabiner 1, data cable, 1 audio cable, 1 Manual 1