Features:1. Using Bluetooth 5.3 chip, high-speed transmission, low power consumption, stable signal without interference.2. 52mm unit speaker, advanced audio decoding, clear and loud sound.3. IPX7 waterproof technology, exquisite workmanship, no need to worry about outdoor rainy days.4. TWS interconnection, the mobile phone can be connected to two speakers at the same time to experience three-dimensional surround sound.5. Mini portable body design, exquisite lanyard, easy to carry.6. Five major playback modes, supporting Bluetooth, TF card, TWS interconnection, FM radio, and AUX playback, meeting various playback needs anytime and anywhere.7. Built-in 500mAh large battery, once fully charged, you can listen to music for 3-5 hours.Parameters:1. Bluetooth version: 5.32. Wireless transmission range: 10m3. Audio noise ratio: 90db4. Battery: 500mAh/3.7V5. Charging voltage: DC 5V/500mAh6. Playback time at normal volume: about 1 hour7. Speaker specifications: OD 52mm x 18. Speaker power: 4 ohm/5W x 19. Frequency response: 120hz-20khz10. Dimensions: 90.3mm x 90.3mm x 53.5mm11. Weight: 218gPackaging list:- Speaker x 1- USB charging cable x 1- User manual x 1Specification: General Certificate CE Package Weight One Package Weight 0.30kgs / 0.66lb One Package Size 15cm * 15cm * 6cm / 5.91inch * 5.91inch * 2.36inch Qty per Carton 80 Carton Weight 22.00kgs / 48.50lb Carton Size 46cm * 42cm * 34cm / 18.11inch * 16.54inch * 13.39inch Loading Container 20GP: 405 cartons * 80 pcs = 32400 pcs40HQ: 942 cartons * 80 pcs = 75360 pcs