The Gadget Stall Review: We at the Gadget Stall love this range of speakers. The product is low priced with a big sound. The top end is really clear, the base is distortion free and it’s pretty loud too. It is not a Bose but for the money it’s a great little speaker

They are pretty robust which is great if you are a dropper!!

I have kept one for myself. 

W-KING S20 Outdoor Waterproof Bluetooth Speaker with Mic Support NFC

With W-KING S20, whether at the beach, by the poolside, having a BBQ in the rain, hiking in the rain or enjoying a shower, you can keep your sound by your side at all times.

• Unique rugged rectangular design

• IPX6 waterproof function makes it perfect for outdoor and bathing use

• Enjoy an impressively crystal clear sound quality and robust bass realized through a 3W audio driver and passive subwoofer

• Connect with Bluetooth-enabled device or just plug in with the 3.5mm audio cable to start your tunes. Or alternatively you can use a Micro sd card

• Tap-to-pair with NFC technology for easy and instant connection (If your device has NFC function)

• Built-in 2000 mAh rechargeable battery enables 10 hours of playtime

• Small and lightweight, with a lanyard for easy on-the-go use

• Built in mic allows hands free use and conference calls

Specification:

• Brand: W-KING

• Model: S20

• Bluetooth Handsfree: Yes

• Bluetooth Version: V4.0

• Supports NFC (Near Field Communication)

• Operating Range: 10m

• Total Power: 3W x 2

• Channel: 1.0

• Interface: 3.5mm, USB 2.0

• Microphone: Yes

• SNR: 80dB

• Sensitivity: 80dB

• Frequency Response: 2.4GHz-2.48GHz

• Impedance: 4ohm

• FM Radio: Yes

• FM Frequency: FM 78.8 - FM 106.1

• Storage Card Type: TF / Micro sd card

• Built-in Battery Capacity: 2000mAh

• Battery Type: Li-ion battery

• Music Playtime: 8-10 hours

• Power Supply: 3.7V DC

• Size: 17.45 x 50 x 70 cm

• Weight: 390g

Compatible with:

• Apple, Samsung, Sony, etc. phones and tablets

• MP3/MP4 players

• Other Bluetooth-enables devices

• Other devices with 3.5mm audio jack including TVs and computers

• micro SD card / tf card

Package included:

• 1 x W-KING S20 Bluetooth Speaker

• 1 x USB Charging Cable

• 1 x Audio Cable

• 1 x Chinese & English User Manual