It's summer, so, despite this week's weather forecast, the sun should be coming out to play a bit more.
And whenever Mr Sun does decide to make an appearance, you can be ready for it with the Sharp SH7128C mobile phone.
There isn't anything that special about the SH7128C, except that it can charge its battery using solar power.
The integrated solar panel charging mechanism now lets you juice up your phone by simply letting it soak up the sunshine.
The problem is that the technology isn't too mature - that is, it isn't that efficient when it comes to turning light into electricity. It takes about 30 minutes in the sun to get about one minute of talk time, or two hours of standby power.
But if Mr Sun co-operates by coming out while you are at the beach, you won't have to worry about running out of power.
Aside from its ability to turn light into chat, you don't get much with the SH7128C.
There is a large 2.9-inch display, and a 5-megapixel camera, as well as a media player. You also get a distinctly Japanese design, with sharp rectangular lines and a display that flips open.
But there's no 3G, since the SH7128C only supports tri-band GSM networks.
What you do get is GPRS and Edge for data connectivity, which should still give you enough speed for e-mails, but not so much for browsing the internet or watching YouTube videos.
The SH7128C is priced at HK$3,780.
Pros: integrated solar panel for charging your battery under the sun, large display, 5-megapixel camera
Cons: takes 30 minutes to get one minute of talk time from solar power, no 3G or Wi-fi