DEVIA Kintone Series BT2602 Mini Waterproof Bluetooth Speaker Wireless Music Subwoofer with Lanyard - Light Green HiFi sound effects,imaginative music feast: Use high-fidelity speakers to restore the shocking sound experience at the scene IPX7 waterproof: first choice for outdoor use Silicone lanyard,easy to carry: a good helper for outdoor hiking and traveling Super long battery life: up to 8 hours of single playback Bluetooth V5.0: Using the latest imported chips,stable connection Specification: Bluetooth version: V5.0 Bluetooth protocol: A2DP,AVRCP,HSP,HFP Working frequency band: 2.402GHz-2.480GHz Frequency response range: 50Hz-18KHz Speaker power: 5W Working range: > 10 meters Battery capacity: 800mAh Play time: 8 hours (medium volume) Charging time: 5 hours Charging port: TYPE-C Functions: listening to music,making phone calls,waterproof IPX7 Package included: 1 x Bluetooth Speaker 1 x Charging Cable 1 x English and Chinese User Manual